Best Slot Sites in the US for December 2023

Emma Trotter

Published and Updated by

Emma Trotter


Lee James Gwilliam

Fact Checked by Expert

Lee James Gwilliam


Last Updated on 6th December 2023, 12:31 PM


What’s the difference between a slots site and an online casino? Well, technically most online casinos for real money have slot games, but for our purposes, slot sites are the ones that specialize in slots. They are the ones that offer a vast collection of quality slot games from the hottest software providers on the market. They are also the ones that provide online casino apps, so you can play slots on the go.

To get started finding best slot sites where you live, simply select your state from our drop-down list below. Our top online slot sites were ranked based on player experience, the overall selection of slots, customer service, banking options, and bonuses/promotions.

Affiliate disclosure: At, we want to ensure that players are matched with the right casino and sportsbook offers for them. For this reason, some of the recommended site links are affiliate links. This means that if you visit a website through our link and make a deposit, will receive a commission payment at no extra cost to you.
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Top Online Slot Sites Overview

Where Can I Play Online Slots?

Here's the good news: there are thousands of online slot sites offering a wide variety of games in legal online casino states. The bad news? There are only six legal states where you'll find these slot sites. Plus, not all of them are legit, and many of them are offshore sites. 

As most players are aware, slot sites are only legal in a handful of states, and those states are incredibly strict about their legislation criteria. Legal US online casino states are New Jersey, Pennsylvania, West Virginia, Michigan, Delaware and Connecticut. 

The bottom line? If you play at one of the above licensed slot sites we recommend in regulated states, you know you’re playing on a high-quality platform that offers an excellent selection of the world’s best slot games.

If you're already in a legal state, then read on to find our highly recommended slot sites available to players in the US. Play free slots from the world's biggest developers or load up and take a spin on some slots for real money. We'll even share some tips on how to play.

Best Online Slot Types

Whether you are new to playing online slots or are a veteran player who knows all the tips and tricks, everyone may be looking for something slightly different in their slot experience. Maybe you're strictly about current bonus promotions, or maybe the graphic themes and colorful aesthetic is what sparks joy when you play. 

We've rounded up different slot categories and matched them with the best operator for what you're seeking, along with an in-depth analysis of these popular brands that includes our rating (out of 5) on every sub-category.

Caesars Palace Online Casino: Highest RTP

Caesars Bonus $2,500 Deposit Match - Promo Code: CASINOSCOM2500
Promo Code: CASINOSCOM2500
Must be 21+ to participate. T&Cs apply.

Owned and operated by Caesars Entertainment, Caesars Palace Online Casino is one to watch. It is home to over 1,000 thrilling casino games, from rewarding progressive jackpot slots to immersive table games. If you’re looking for the complete Vegas package, register for a Caesars Palace Online Casino account today and grab a $10 bonus on the house. 

  • Casino games: 1,000+
  • Jackpot slots: 11, including Divine Fortune and Cleopatra 
  • Bonuses: 100% deposit match up to $2,500
  • Max payout: N/A

Top 5 Slots available at Caesars Palace Online Casino:

  • Bonanza
  • Cleopatra
  • Dragon Power
  • Extra Chilli 
  • Endless Treasure Megaways

Slot games: 4/5

Caesars offers an impressive range of slot titles, including jackpots, Megaways, classics, and even Slingo games. Whatever your theme preference or budget, you’ll find something to suit it. In the future, we would like to see more progressive jackpot titles added to the mix. Its current offering of 11 is pretty small.

Free Spins & Bonuses: 4.5/5 

Although we would like to see a few more ongoing promotions for returning Caesars players, we will say that the welcome bonus and VIP loyalty program are some of the best in the game. From the get-go, new players can receive a 100% deposit match bonus up to $2,500 and 2,500 Rewards Credits if they deposit a minimum of $25.

The fun doesn’t stop there, either. From registration, you’ll be automatically enrolled in the Caesars Rewards Program, where you can win exclusive bonuses and prizes by playing games and earning loyalty points. 

Interface and gameplay: 3.5/5 

While the Caesars gambling brand has an extensive history dating back to the 1940s, Caesars Palace Online Casino has only been around since 2023. That said, its website could do with several updates and a redesign. We can forgive this partly since the site is so new on the US online gambling scene, but we’d love to see a better way to filter between the 1,000+ games.

Still, some of the biggest software developers in the business power the games here. With industry-leader IGT behind most games, we can’t fault the dazzling in-play graphics and visuals. 

Deposits and withdrawal: 4/5 

Caesars Palace Online Casino accepts a wide range of payment methods. This collection includes debit and credit cards, e-wallets such as PayPal, online banking, and prepaid options. The site covers all bases here. Also, the $10 minimum deposit and withdrawal limits make Caesars the perfect platform for budget bettors.

Withdrawals can take anywhere between 3-5 days to process, which is pretty slow compared to other leading US slot sites that payout within one day. As such, we’d love to see quicker cash-out speeds.

Mobile compatibility: 5/5 

Mobile users can play on the go by visiting the Caesars HTML5-optimized mobile browser site or downloading the native app. The mobile app is compatible with iOS and Android devices and runs smoothly on both. 

Overall, we couldn’t fault the casino’s mobile capabilities. The mobile version of Caesars Palace Online Casino is responsive to all mobile and tablet devices. We tested gameplay on the app and mobile browser site and found games loaded quickly and maintained their quality.

Customer support: 4.5/5 

Caesars Palace Online Casino’s around-the-clock customer care is virtually faultless. If you encounter an issue and require assistance, you can contact support staff via phone, email, and live chat. We only deducted a few points here as phone support isn’t available in all states.

Caesars Palace Online Casino Slots Pros and Cons

Generous bonuses
Earn exclusive perks and prizes bonuses with the Caesars Rewards program
Dedicated Caesars Palace Online Casino app for iOS and Android
Phone support is not available in all states
Fewer casino promotions for returning players

FanDuel Online Casino: Best Graphics

FanDuel Bonus Deposit $10, Get 50 Bonus Spins & Get Up to $1000 Back
Must be 21+ to participate. T&Cs apply

Winner of EGR’s Operator of the Year award in 2021, FanDuel is one of the largest providers of Daily Fantasy Sports. Initially launched in 2009, FanDuel is now also a well-established online casino, available in multiple states across the US, including NJ, PA, MI, CT, and WV. Download the award-winning FanDuel app or visit the desktop site to claim a cashback bonus of up to $1,000 for your first 24 hours of playing. You can enjoy hundreds of slots with a boosted bankroll!

  • Casino games: 450+
  • Jackpot slots: 51, including Double Jackpot Gems and Black Diamond
  • Bonuses: Get up to $1,000 cashback + 50 bonus spins
  • Max payout: N/A

Top 5 Slots available at FanDuel Online Casino:

  • Green Machine Deluxe
  • Big Money Frenzy
  • Jin Ji Bao Xi Endless Treasure
  • Masters of Atlantis
  • Ultimate Fire Link China Street

Slot games: 3.5/5

Home to around 200 slot titles, FanDuel doesn’t have the most extensive collection you’ll ever encounter. That said, you can still spin the reels of thrilling games from some of the biggest developers in the industry, such as NetEnt and Games Global. Plus, with over 50 progressive jackpots, high rollers will feel at home here. We would just like to see a more vast offering in the future.

Free Spins & Bonuses: 4/5 

New FanDuel players are awarded 50 free spins on Cash Eruption, Cleopatra, and Declaration of Spindependence. There is only a 1x wagering requirement on the casino cash you win from your free spins, making this one of the most generous welcome offers around. Casual gamblers are also thought of as the minimum deposit is $10.

Plus, FanDuel Casino rewards its existing players with plenty of daily and seasonal promotional offers to keep them coming back for more. The five-tiered loyalty program allows you to earn VIP points for every real money wager you make.

Interface and gameplay: 5/5 

FanDuel Casino offers an exciting gaming experience on both desktop and mobile devices. While the casino doesn’t have the most generous selection of games, we were impressed with the responsiveness and fast load times. This is thanks to its partnerships with experienced developers such as Evolution Gaming, Games Global, NetEnt, Big Time Gaming, and IGT.

The desktop software is among the best we’ve seen. The platform is expertly designed, providing an easy-to-navigate site and a user-friendly interface.

Deposits and withdrawal: 4.5/5 

When it comes to payment methods, you are taken care of at FanDuel. The casino accepts the most commonly used options in the US, including debit cards, bank transfers, e-wallets, prepaid cards, and checks. You can also make in-person deposits and cash-outs if you visit the casino cage at one of FanDuel’s land-based retail casinos. 

Most withdrawals are processed relatively quickly, within 48 hours. However, some methods, including online banking, can take up to 5 days for you to receive winnings.

Mobile compatibility: 5/5 

Mobile US casino players have a lot to like at FanDuel Casino. You can visit the HTML5-optimized site using your mobile browser or download the native app. Our experts tested both and found the gaming quality and visuals equally impressive.

For those looking for the most bespoke experience, however, we suggest downloading the FanDuel Casino app. With over 1 million downloads and excellent reviews from Android and iOS users, the FanDuel mobile app is among the best on the market. 

Customer support: 4.5/5 

FanDuel has an assortment of customer support options on standby to lend a helping hand if needed. This includes live chat, email, and Twitter, where support staff are available between 8 AM and 12:30 AM. Email responses can take between 12 and 24 hours, so we suggest using the live chat option, as agents work around the clock to provide instant and helpful answers.

Again, we deducted a few points here as there is no phone support.

FanDuel Online Casino Slots Pros and Cons

High ratings on the Google Play Store (4.7/5) and Apple App Store (4.8/5)
Low 1x wagering requirements for the welcome bonus
EGR’s 2021 “Operator of the Year”
Welcome bonus only live for the first 24 hours
Fewer games than competitor sites

DraftKings Online Casino: Best for Progressive Slots

DraftKings Bonus 100% Deposit Match Up To $2,000
Must be 21+ to participate. T&Cs apply

DraftKings is one of the biggest names on the US gambling scene. Not only does it offer sports betting and fantasy sports, but it is also home to over 1,100 casino games. This includes 50 exclusive titles you won’t find anywhere else. That’s not the only thing this operator likes to do differently, offering not one but three welcome offers. Register for a new DraftKings account to claim $100 in casino credits or a deposit match bonus of up to $2,000.

  • Casino games: 1,100+
  • Jackpot slots: 200+, including Apollo God of the Sun and Hop It & Profit
  • Bonuses: 100% deposit match up to $2,000
  • Max payout: $100,000

Top 5 Slots available at DraftKings Online Casino:

  • Cash Eruption
  • Fire Buffalo
  • Hypernova Megaways
  • Wheel of Fortune – Triple Extreme Spin
  • Lucky Larry Lobstermania II

Slot games: 5/5

Since DraftKings Casino offers over 1,000 titles, slots occupy most of the site’s games lobby. From traditional classics, like Double Diamond, to thrilling Megaways like Fruit Shop Megaways, DraftKings has it all. It is also home to around 200 progressive jackpot slots, with several games featuring up to six or even seven-figure grand prizes. 

DraftKings also allows you to practice games in free-play mode so you can learn the rules and test out strategies before wagering actual cash.

Free Spins & Bonuses: 4/5 

DraftKings offers new players the choice of three attractive welcome offers depending on your budget. Low-stake players who deposit a minimum of $5 can either claim a 100% deposit match up to $2,000 or up to $100 in casino credits. VIPs who deposit more than $2,000 will receive a customized welcome offer. The playthrough requirements are also pretty reasonable, which is another sign of DraftKing’s generosity.

Although there aren’t too many ongoing promotions to reward existing customers, the DraftKings Dynasty Rewards Program ensures no one is forgotten about. There is also an exclusive VIP program, which is invite-only, but top players can unlock exclusive offers. 

Interface and gameplay: 3.5/5 

DraftKings partners with top software providers like NetEnt and IGT to offer a high-quality gaming experience. The site is also designed well, offering a sleek and modern look. However, we found the games lobby particularly difficult to navigate. Unfortunately, there are few filters to locate specific slot titles and avoid having to scroll through the 1,000 games. 

Deposits and withdrawal: 4/5 

DraftKings Casino provides multiple banking options to suit various players’ preferences. You can choose from debit cards, online bank transfers, PayPal, prepaid cards, and in-person at the casino cage. The casino also accepts mobile payment options like Venmo and Apple Pay.

Although the time it takes to receive withdrawals depends on the payment method, it can take up to five days to receive your cash. This is a little slow in our eyes, so if you’re keen to receive your winnings quickly, we recommend using a debit card, as these usually pay out within 24 hours. 

Mobile compatibility: 5/5 

DraftKings Casino is optimized for on-the-go casino fun. You can download the native iOS and Android apps for free on the Apple App and Google Play Stores. The casino app is organized, easy to use, and offers a complete mobile package.

For those wanting to save on storage space, simply visit the site through your mobile browser search. This will take you to the HTML5-optimized mobile site, which is responsive to all smartphone and tablet devices. All in all, DraftKings’ mobile facilities are excellent. 

Customer support: 3.5/5 

Although DraftKings claims to offer 24/7 customer support with its live chat service, we found it was actually an automated bot when we put it to the test. So, instead of receiving helpful and sincere advice from a real-life agent, we received copied responses from the site’s FAQ pages that were irrelevant to our issues.

Alternatively, you can email the casino or request a callback. Support staff should get back to you within 24 hours. 

DraftKings Online Casino Slots Pros and Cons

Helpful casino guides for new players
Win exclusive rewards and prizes with the Dynasty loyalty program
200+ high-paying jackpot slots
Few sub-headings to separate the 1,000 slots
Live chat customer support is an automated bot

Borgata Online Casino: Best Overall Slots

Borgata Bonus 100% Deposit Match up to $1000 + $20 on the House - Promo Code: GDCBONUS
Promo Code: GDCBONUS
Gambling Problem? For help call 1-800-GAMBLER. Must be 21+. NJ only. New Customers Only. Please Gamble Responsibly. Visit for Terms and Conditions. All promotions are subject to qualification and eligibility requirements. Rewards issued as non-withdrawable site credit/bonus bets unless otherwise provided in the applicable terms Rewards subject to expiry.

The Borgata Hotel Casino and Spa opened in 2003 and is one of the best-known in Atlantic City and top-grossing. Unsurprisingly, the Borgata online casino is a massive hit with players in New Jersey and beyond. Voted Casino Operator of the Year at the 2023 EGR Awards and featuring over 2,600 games, Borgata is one to watch. It was also one of the first casinos to launch its online platform in New Jersey after the state legalized real money casino gambling in 2013. 

  • Casino games: 2,600+
  • Jackpot slots: 120+, including Dynamite Riches and Smoking Hot 7’s
  • Bonuses: 100% deposit match up to $1,000 + $20 on the house
  • Max payout: $100,000

Top 5 Slots available at Borgata Online Casino:

  • Diamond Rush
  • Ghostbusters Triple Slime
  • Armadillo Goes West
  • Cherrylicious
  • Stellar Cash Blown Away

Slot games: 5/5

Borgata is home to one of the most extensive slots portfolios there is. Featuring over 2,500 titles, you’ll find everything from classic virtual fruit machines to exciting Megaways. The site also has over 120 progressive jackpot slots, which have the potential to pay out huge prize pools that can reach a whopping $3 million. 7 Fruit Blaster and Fjord of Riches are exclusive jackpots you’ll only find at MGM-owned sites that currently stand at $2.9 million.

With most slot titles offering average RTPs between 95% and 98% and diverse bet limits, Borgata is a slot spinners paradise. 

Free Spins & Bonuses: 4/5 

You won’t be disappointed by Borgata’s bonus offers. You can claim a fantastic sign-up bonus that includes a 100% deposit match up to $1,000. The casino will also throw in a $20 no-deposit bonus for good measure. The no-deposit bonus comes with excellent 1x wagering requirements, while the deposit match bonus cash has 15x, both of which are below the industry average. 

Although the ongoing promotions at Borgata are slightly limited, loyalty is still rewarded at Borgata Casino. As an MGM-owned site, all new Borgata players are automatically enrolled in the MGM Rewards program. You can earn points that you can eventually redeem for vouchers or discounts for various MGM and Borgata resort properties around the US.

Interface and gameplay: 4.5/5 

The first thing you’ll notice about the Borgata site is that it is very well-designed. Navigation is also a breeze, a must with such a big supply of games. Games are organized into sub-categories, such as slots, table games, virtual sports, etc., and filtered by the provider, most popular, and feature. 

Surpassing 20 software providers is another way Borgata stands out from the crowd. Games are powered by some of the biggest developers in the industry, such as IGT, NetEnt, Inspired, and Evolution. We were seriously impressed by the visuals and high-quality graphics. If you’re looking for an unforgettable casino experience, you won’t find much better than Borgata.

Deposits and withdrawal: 3.5/5

The casino accepts various popular and trusted banking methods, including major credit/debit cards, online banking, VIP Preferred E-check, PayNearMe, Play+, Skrill, and PayPal. iPhone users can even fund their accounts with Apple Pay. All in all, the site covers all bases. 

Borgata Casino accommodates players with all sorts of budgets, as the minimum deposit limit is $10, and the maximum withdrawal cap is $100,000. However, there is still room for improvement. Some withdrawal methods can take up to 7 days to process, and you can only use specific options if you have deposited with them in the past six months.  

Mobile compatibility: 4.5/5 

Borgata Casino provides excellent mobile capabilities. Firstly, you can download the dedicated app for free, which is compatible with Android and iOS. Although a few older game titles are missing compared to the desktop version, the app still features most of Borgata’s modern slots, table games, and live dealer options. 

If you’d prefer not to download the app, don’t worry! Borgata Casino is built on HTML5 technology, which means it is responsive and optimized for mobile use. This tech allows the site to seamlessly transition from desktops to the screens of smartphones and tablets. 

Customer support: 3/5 

Customer care is where Borgata falls short. Although the casino claims to provide around-the-clock support via live chat, we waited several hours for a response. After which, the session eventually timed out. 

If, like us, you receive no response, then alternatively, you can fill out the on-site form to receive a response by email. Although we had to wait a day for a reply, the answers were helpful and informative. We also deducted points as there is no phone support.

Borgata Online Casino Slots Pros and Cons

Casino Operator of the Year at the EGR North America Awards 2023
60+ exclusive games
$20 no-deposit welcome bonus
Slow responses from live chat support
Only 15 live dealer titles

BetMGM Online Casino: Best Slot Game Selection

BetMGM Bonus 100% Deposit Match Up To $1,000 + $25 On The House
Must be 21+ to participate. T&Cs apply

BetMGM came into existence in 2018 after the partnership of MGM Resorts and Entain Holdings. Since then, it has become one of the top US online platforms for casino gaming, sports betting, and poker. Offering over 3,000 top games and a fantastic sign-up bonus, BetMGM ensures the casino fun never ends. 

From the get-go, you’ll be rewarded with $25 free on the house and automatically enrolled into the MGM Rewards loyalty program. This allows you to win exclusive prizes, such as vouchers for MGM Resorts properties nationwide. 

  • Casino games: 3,000+
  • Jackpot slots: 150+, including Star Jewels and Funky Pharoah
  • Bonuses: 100% deposit match up to $1,000 + $25 on the house
  • Max payout: N/A

Top 5 Slots available at BetMGM Online Casino:

  • Gold Blitz
  • Texas Tea
  • Golden Treasures
  • Tiki Fortune
  • Ultimate Fire Link China Street

Slot games: 5/5

For slot lovers, BetMGM Casino’s 2,700+ games are a dream come true. The site offers everything from classic video slots to unique Slingo games. New titles are added regularly, so whatever your budget or theme preference, you’ll certainly find something to capture your attention. 

Those chasing the big wins have plenty of choices, as BetMGM offers over 150 progressive jackpot slots. You’ll be looking at awesome titles like Bison Fury, 15 Lanterns, and Luck of the Jackpot, many of which offer up to $2 million jackpots. 

Free spins & Bonuses: 4/5 

Both new and ongoing customers are rewarded at BetMGM. The generous welcome package, containing a 100% deposit match up to $1,000 and $25 free on the house, is one of the best around. 

The exclusive MGM Rewards program is also pretty great. This five-tiered loyalty program allows players to earn iRewards Points to improve their VIP Status. The more points you earn, the more exclusive prizes become, offering anything from faster withdrawals to free hotel stays at MGM Resorts properties.

Interface and gameplay: 5/5 

BetMGM offers an extremely user-friendly and aesthetically pleasing website. The dark backdrop contrasts nicely with the sleek gold headers. Navigating specific games is also a breeze, thanks to its well-organized lobby. Titles are separated into subheadings by type, provider, and game mechanic.

With over 3,000 games, it’s no surprise that BetMGM partners with some of the biggest providers there is. The likes of IGT, NetEnt, and Play’n Go are behind most games, which promises an unforgettable in-play experience. 

Deposits and withdrawal: 3.5/5 

BetMGM accepts most major US payment options, such as Visa, MasterCard, PayPal, VIP Preferred, and Play+. Depending on your location, you can even place in-person deposits and withdrawals at the casino cage. 

Although BetMGM ticks most boxes here, we were disappointed that the minimum withdrawal limit is $20. We would like this lowered to $10, or even $5, to suit casual bettors.

Mobile compatibility: 4/5 

The BetMGM app is compatible with iOS and Android devices and allows you to play your favorite casino games on the go. Although the app has received mixed reviews on the Apple App and Google Play Stores, experts were pretty impressed. We suggest that those who’ve complained of glitches update the app. We downloaded the most recent versions and experienced undisturbed casino gaming. 

We saw no difference in game quality when playing on the go using our trusty cell phones or tablets. However, if you’re looking for the most bespoke mobile experience, download the BetMGM app. You can also claim an exclusive $10 casino bonus available to mobile players every Wednesday. 

Customer support: 4/5 

Customer support at BetMGM is available around the clock via live chat. There is also an on-site request form to receive help via email. Email responses, although helpful, can take up to 24 hours, which is less than ideal if your issue is urgent.

The live chat is your best option for receiving instant help. While it can be tricky to locate at first, you can find it by clicking the headphone icon at the top of the site’s homepage.

BetMGM Online Casino Slots Pros and Cons

80+ exclusive BetMGM games
MGM Rewards Program allows players to unlock credits and vouchers at MGM Resorts properties
Dedicated Poker platform with tournaments and poker school
Only 13 live dealer games
Live chat support is difficult to locate on-site

BetRivers Online Casino: Best for Slot Tournaments

BetRivers Bonus 24 Hours of Casino Losses Back Up To $500
Must be 21+ to participate. Bonus Money Has a 1x Playthrough After Entering Deposit Code. Terms and conditions apply.

BetRivers is a popular online casino and sportsbook owned by Rush Street Interactive. The site features over 1,300 casino games, including slots, progressive jackpots, table games, and live dealer games. You can also look forward to regular slot tournaments to compete against other players. New players who register for a BetRivers account can claim a generous cashback bonus of up to $500. 

  • Casino games: 1,300+
  • Jackpot slots: 98, including Siberian Storms and Dynamite Dash
  • Bonuses: 24 Hours of Casino losses back up to $500
  • Max payout: $20,000

Top 5 Slots available at BetRivers Online Casino:

  • Capital Gains
  • Cash Eruption
  • 88 Fortunes
  • Hypernova Megaways
  • Diamond Sands

Slot games: 4/5

BetRivers Casino has over 1,000 slot games, including popular classics, thrilling Megaways, and lucrative progressive jackpots, including Siberian Storm and Piggy Pennies. BetRivers is also home to over 30 unique Slingo titles, like Slingo Starburst and Slingo Cleopatra. Bet limits start at .10, so you’ll find something to catch your eye, whatever your budget.

BetRivers likes to keep things exciting by hosting regular slot tournaments, allowing players to compete against other users and potentially win cash prizes. Click on the ‘Tourney’ tab at the top of the games lobby to see what upcoming tournaments are happening soon.  

Free spins & Bonuses: 3.5/5 

New players who deposit a minimum of $10 are rewarded with a generous cashback bonus of up to $500 for any net losses incurred in their first 24 hours of casino play. Although this isn’t the most generous promo we’ve encountered, the low 1x wagering requirements make this a pretty valuable offer.

When it comes to ongoing promotions, it seems most are tailored toward sports fans. That said, the BetRivers’ rewards program (iRush Rewards) allows loyal players to earn iRush points by playing their favorite games. You can then redeem your points and unlock exclusive perks, like free casino credits and instant withdrawals. 

Interface and gameplay: 3.5/5 

BetRiver’s interface isn’t the most exciting you’ll come across; in fact, it could do with a bit of a revamp. That said, the organization of its games lobby is very intuitive. You should have no problem finding a specific title, as everything is laid out clearly. There is also a handy search bar on standby if you’re short on time.

BetRivers Casino offers games from around 15 software providers, including big names like High 5, NetEnt, Evolution Gaming, and IGT. Although this isn’t the most extensive collection, thanks to the site’s software developer partnerships, you can expect the best quality and most popular games.

Deposits and withdrawal: 3.5/5 

Although the accepted banking options vary depending on which state you play from, there is still a decent selection. For the most part, you can use credit/debit cards, online banking, VIP Preferred, PayPal, and prepaid cards. PA, MI, and NJ players can also make in-person payments and withdrawals at the casino cage. 

BetRivers Casino typically processes withdrawals within 24 hours and can be received almost instantly if using PayPal, Venmo, and BetRivers Play+Cards. The minimum deposit and withdrawal limit is $10, which is great for budget bettors. Where BetRivers falls short is that withdrawals are capped at $20,000, which can be an inconvenience for lucky players who hit the jackpot and win big.

Mobile compatibility: 4.5/5 

Thanks to HTML5 technology, BetRivers Casino is optimized for on-the-go casino fun. While you can visit the site straight from your mobile browser, US players can also download the dedicated iOS and Android app. Although the app has received a pretty poor Google Play Store rating, it has recently undergone an exciting revamp, and it shows. 

Our experts only had positive things to say, commenting on the easy navigation and speedy performance. The new and improved casino app is a modernized version of the slightly outdated desktop site, allowing you to enjoy casino gaming at the touch of a button from virtually anywhere.

Customer support: 3/5 

In 2023, BetRivers was named Customer Service Operator of the Year at the EGR North America Awards. So, to say we had high expectations of its customer care would be an understatement. If you head to the ‘Help Center,’ the site will take you to its FAQ page. Yet, this could do with being a touch more detailed. For instance, the available banking methods and policies are nowhere to be found. 

There is also live chat and email support. However, the live chat is only in operation between 9:30 AM and 2:00 AM, and email responses can take up to 48 hours. We found the support staff professional and knowledgeable but would prefer to see around-the-clock customer support. 

BetRivers Online Casino Slots Pros and Cons

Instant withdrawals available
Regular slot tournaments to compete with other players
Favorable wagering requirements attached to the welcome offer
Fewer games for WV players
Live chat support isn’t available 24/7

Golden Nugget Online Casino: Best Slot Bonuses and Promos

Deposit Match up to $1,000 with a first-time deposit of $30 or more. Valid only in PA. Must be 21+ to participate. T&Cs apply

Golden Nugget’s origins go way back. In the 1940s, its first land-based casino was built, making Golden Nugget one of the US’ longest-standing operators. Since 2020, Golden Nugget’s online casino has brought the glitz of the Vegas strip to the screens of US players. 

With over 1,500 casino games alongside a successful sports betting platform, Golden Nuggets is one of the top dogs on the US gambling scene. The site also warmly welcomes new casino players with a fantastic deposit match bonus of up to $1,000 and 200 free spins. 

  • Casino games: 1,500+
  • Jackpot slots: 28, including Almighty Buffalo and Blazin’ Gems
  • Bonuses: 100% deposit match bonus up to $1,000 + 200 bonus spins on 88 Fortunes Megaways 
  • Max payout: $250,000

Top 5 Slots available at Golden Nugget Online Casino:

  • Fortune Coin
  • Davinci Diamonds
  • 5 Treasures
  • Stacked Fire 7’s
  • Astronomical Magic

Slot games: 4.5/5

Golden Nuggets features an impressive collection of around 1,400 slot titles. This includes every format and theme you can imagine, including classic slots, video slots, Megaways, progressive jackpots, Slingo, and more. 

Each title comes with a rating out of 5, so you can see which are the most popular. Plus, if you click the ‘i’ icon, a description of the game will pop up on the screen. This tells you everything you need to know, including its RTP, max payout, and betting limits, which start from as little as $0.10, perfect for budget bettors.

Free Spins & Bonuses: 4/5 

Golden Nugget Casino displays its generosity proudly with its new player sign-up bonus. Players who deposit a minimum of $30 will receive a 100% deposit match up to $1,000 plus 200 free spins on 88 Fortunes Megaways. Although we would like to see the minimum deposit lowered, we can’t argue that this is an excellent offer. 

The fun doesn’t end there. Golden Nugget Casino offers plenty of exciting ongoing promotions to keep you on your toes. For example, the casino currently holds a monthly leaderboard tournament with $20,000 up for grabs every week. The Golden Rewards Club also allows you to earn points for every wager you make, which you can exchange for exclusive perks and other exciting ways to enhance your experience.

Interface and gameplay: 4/5 

Golden Nugget Casino features one of the most well-organized game lobbies we’ve encountered. Navigation is a breeze as the casino uses complex game filtering and search tools. There is nothing you won’t find easily. 

Golden Nugget Casino’s games are powered by 28 different software providers, including some of the best in the game, such as Bally, NetEnt, and Inspired. It’s a plus if you’re looking for top-of-the-range gaming.  

Deposits and withdrawal: 3.5/5

The online casino accepts the usual banking methods you’d expect, including Play+ cards, major credit/debit cards, online banking, PayPal, VIP preferred, and in-person at the casino cage. Play+ prepaid cards are great for keeping a rein on your spending, and even better, the casino will give you $10 if you use this payment option.

Where Golden Nuggets let us down is that you can’t cash out your winnings with Visa and Mastercard credit/debit cards. Also, some banking methods have a $20 minimum limit for both deposits and withdrawals. Other casino brands tend to offer lower, around the $10 mark.

Mobile compatibility: 4/5 

In addition to the HTML5-optimized mobile browser site, Golden Nugget Casino offers a free native app compatible with iOS and Android devices. The Golden Nugget app is one of the best in the business, featuring almost all the same games as the desktop version. Navigation is also smooth, with accessible and intuitive filters.

If you’re not one for apps, you can still play Golden Nuggets games via your mobile device by visiting the casino from your mobile browser. Our experts experienced no difference in game quality when playing on desktop or mobile devices.

Customer support: 4.5/5 

Golden Nugget Casino provides around-the-clock support via live chat, phone, and email. Although we had to wait around 24 hours for email responses, they were detailed and needed no follow-up. You can find all channels easily by clicking the ‘Help Center’ link at the top of the homepage.

We must mention that the Golden Nuggets FAQ page is also very detailed and covers the most common queries that could potentially crop up.

Golden Nugget Online Casino Slots Pros and Cons

Generous welcome bonus of up to $1,000 + 200 free spins
Well-organized games lobby
Casino Operator of the Year at the EGR North America Awards 2020
A high minimum deposit of $30 to activate the welcome bonus
Limited exclusive game titles

High 5 Social Casino: Best For Free Slots

High 5 Bonus 600 Diamonds, 250 Game Coins + 5 FREE Sweeps Coins On Sign Up
Must be 18+ to participate. T&Cs apply.

High 5 is a social casino brought to US players from High 5 Games, the successful software developer. It is home to over 800 casino-style games, mainly slots and jackpots. You can play in free-play mode or with Sweeps Coins to win real cash prizes, with no purchase necessary. New players can boost their virtual bankrolls with a High 5 casino no deposit bonus stacked with more than enough free currency to get you started.

  • Casino games: 800+
  • Jackpot slots: 26, including Lucky Horse and Secrets Of The Forest
  • Bonuses: 600 Diamonds, 250 Game Coins, + 5 Free Sweeps Coins on Sign Up
  • Max payout: N/A

Top 5 Slots available at High 5 Social Casino:

  • Triple Davinci Diamonds
  • Cyclops Smash
  • Kiss Of The Rose
  • Candy Blitz
  • Vault Of Fire

Slot games: 3.5/5

When it comes to slots, High 5 has around 800 titles covering various themes, mechanics, and features. However, not all are available to play from the get-go. You can access only about 250 titles from sign-up, but you can easily unlock more by increasing your loyalty level. 

Along with popular games like The Green Machine Delux: Racking Up Riches, Hoot Loot, and Dangerous Beauty, you’ll also find a handful of table games. This includes blackjack, roulette, and even Dragon Tiger.

Free Spins & Bonuses: 4.5/5 

High 5 Casino is a free-play sweepstakes casino site that offers regular ongoing promotions to pick up Game Coins and free SC coins. Therefore, you won’t ever have to spend a cent to enjoy playing games. Starting with the welcome package, new players can claim more than enough virtual currency to get started, including 600 Diamonds, 250 Game Coins, and 5 Free Sweeps Coins.

If you need a free coin top-up, you can easily claim more with the daily log-in bonus. The Daily Wheel spin also allows you to win special perks and prizes. From sign-up, you’ll automatically be enrolled in the casino’s loyalty program called Club High 5. This seven-tiered VIP program allows players to win exclusive bonuses and unlock more games.

Interface and gameplay: 3/5 

First things first, the sign-up process for High 5 Casino will take you a maximum of 5 minutes. Unfortunately, we encountered some slower loading times when navigating the site. Although a graphic-heavy site with a brightly colored design may seem eye-catching for some, it was a bit much for us. It is not intuitively laid out, and menus are rather minimal.

That said, most games are powered by the casino’s own bespoke software, High 5 Games, alongside other leading software developers like Pragmatic Play. Therefore, you can expect high-quality graphics and immersive gameplay. 

Deposits and withdrawal: 4/5 

Although you can technically play at High 5 Casino without spending a single dollar, you can still purchase Game Coin bundles to top up your virtual bankroll. Accepted payment options include major credit cards, online bank transfers, PayPal, and Skrill. Although there are fewer options than at real-money online casinos, this range of banking methods is pretty standard for social casinos in the USA.

Regarding redemptions, the whole process is pretty straightforward, and the same payment options are available. You’ll have to earn a minimum of 100 Sweep Coins, equivalent to $100, to request a redemption. 

Mobile compatibility: 4/5 

You can access High 5 Casino on your smartphone or tablet by downloading the dedicated app from the Apple App Store or Google Play Store. Both have received positive reviews from players, with an average rating of 4 out of 5 stars. 

The High 5 app and the HTML5-optimized mobile browser site are essentially condensed versions of the desktop site, mirroring the same design and offering the same games. The layout is different, however, offering better functionality. But unfortunately, both still take a while to load.

Customer support: 3/5 

Customer support is an area where High 5 Casino could do better. The FAQs are a little confusing and don’t cover all topics like payments very well. So, if you do require assistance, your only other option is to send an email. Although we didn’t have to wait too long for a response, we would like to see live chat support in the future.

As High 5 is a social casino, you are also encouraged to contact support staff via its social media channels, such as Twitter and Facebook.

High 5 Social Casino Slots Pros and Cons

Winner of Social Casino Operator of the Year at the EGR North America Awards 2023
Available in most US states
The High 5 Casino app allows for on-the-go casino fun
Limited table games
Overcrowded help section

What Makes a Good Online Slot Site?

We only recommend the best online slot sites that pass a strict range of criteria. We're not just looking for good slots; we want to see fully licensed gambling platforms with top security, lots of bonuses and helpful customer support. Check out the list at the top of the page for the current best slot sites plus their latest promo offer.

Additionally, here are some of the characteristics of good slot sites:

Slot Site Bonuses

Top slot sites will offer new sign-ups a welcome bonus when they make their first deposit (or series of deposits), and they will also offer the opportunity to get bonuses on a weekly or seasonal basis, or to earn loyalty points when they play online slots. Slot bonuses can include free spins on the latest games or a deposit match bonus to give players extra money to play the casino’s games. Some offers include a combination of both, so shopping around different operator offers is key.


Checking for good security protocols is top of our reviewers' list here at We only recommend slot casinos that have SSL (Secure Socket Layers) encryption that protects player's bankrolls and personal data. Additionally, the online slot casinos that offer these games are all licensed and regulated by the states in which they are located.

Multiple Slot Games

It goes without saying that to be considered a top slot site, the online casino must have an excellent selection of slot games. Good casinos online will offer hundreds, if not thousands, of the latest online slots. You should be able to choose from old-school 3-reel games or the newest bonus games with big jackpots and online casino free spins offers. Casinos should also have partnerships with a range of major slot software providers.

Free Slots

The beauty of online slot sites is that you can often try out games for free before you pay. Select the demo play option, if available, and gamble with play credits on a range of exciting free slot games. The gameplay will be exactly the same as in the real money versions, although the win rates will differ.

Mobile Slots

All good online slot sites will offer a compatible mobile version of their games. The best mobile slots are specially adapted for your device, so you can simply log in via a smartphone or tablet to play. The mobile-optimized slots adapt to fit smaller screens, and functions like spin and coin size are accessed via touch buttons.

Variety of Slot Game Providers

There are dozens of reputable slot providers offering games in the US right now. The best online slot sites will have a good selection of leading manufacturers who are properly licensed and audited. They offer the latest games you won't find in your local brick-and-mortar casino.

Payment Options

How good is the range of payment options? Are US bank and credit cards standard and what is the success rate? Does the casino offer PayPal or Skrill or other payment types that don’t expect you to give your banking info to the casino? If you’re planning to play slots online, funding your account should be easy and convenient, through a payment method you prefer. We test every online casino to check for payment method availability, withdrawal times, and whether there are any fees.

Fast Payouts

No one wants to wait weeks for a cashout to be processed. The best online casinos that payout fast will ensure you have your money within a few days. E-Wallet transactions should be processed immediately, and players should have the option to reverse their withdrawal.

Variance and Volatility

Variance, or volatility, is the regularity with which a slot pays out. Volatile slots pay out big prizes but they are infrequent. Low-volatility slots pay small cash prizes more often. You can usually work out the variance after a period of play.

Online Slots To Avoid

You can rest assured that only the most trustworthy US slot sites make it onto this page. Our gambling experts conduct in-depth reviews, looking closely at every aspect of an online casino. Only those who pass our strict tests make it onto our recommendations. If a casino doesn’t make the grade, we’ll make sure you know it’s one to avoid. 

Super Slots

We do not recommend Super Slots Casino to our readers as the site doesn’t make its license clear. Many players have also reported that the operator refused to pay out winnings and respond to complaints. As such, we suggest you avoid Super Slots Casino at all costs. 

Ignition Casino

Ignition is another scam site we suggest steering well clear of. Its Curacao licensing is questionable and is not displayed clearly at all. Neither is the site’s RTP (Return to Player), which is probably why so many players have complained that games are rigged. 


Slots.Lv is an unlicensed site that offers unfair bonus terms and conditions, sometimes even voiding players’ winnings. The casino has also been known to deduct winnings from dormant accounts and block players from requesting withdrawals by shutting their accounts down.

Slots Empire

Although Slots Empire claims to have a license from the Curacao Gaming Commission, it falls short in several other areas. For one, many players have complained about being locked out of their accounts after requesting a withdrawal. 

Big Spin Casino

Although Big Spin Casino holds a Curacao gambling license, it fails to meet the requirements of licensing bodies in the US. Therefore, it is best avoided. Multiple players have reported unreasonable bonus conditions and unfair withdrawal limits.

Types of Slot Bonuses

When you play online slots with real money, you’ll always have the chance to earn free cash. Casinos are always keen to retain players, and they achieve that through various bonuses and promotions. Many people are looking for no deposit slot bonuses. You'll be pleased to know that these slot promotions are readily available at our recommended sites. Other exciting promos that let you play slots for real money include:

Deposit Match Welcome Bonus

The best way to earn free cash at a casino is by claiming a deposit match bonus. Make your first deposit and play eligible slots in order to clear your bonus. Clear the bonus funds within the set time period and you’ll be rewarded with free cash. Here’s how it works:

  • The online casino awards new signups with a 100% welcome bonus up to $500 (for example). That means, if you deposit up to $500, the casino will match it with the same amount in bonus funds.
  • All slots contribute 100% toward the bonus. So, for every dollar you play, you will clear a dollar of bonus cash.
  • The bonus will carry a wagering requirement. It could be anywhere from 10x to 50x the size of the deposit. To clear the money, you must meet the wagering requirement.
  • If you deposited $100 for a 100% bonus with a 25x wagering requirement, you would have to bet $100 x 25 ($2500) on slots before withdrawing your free $100.

Free Spins Welcome Bonus

As a new signup, you can also claim free spins. It’s a great way to enjoy online slots for real money with no deposit.

In a free spins bonus, you receive a number of free games on selected slots. Play the spins at permitted stakes and rack up some winnings. To release the winnings, they must be wagered several times over.

Reload Bonus

You can also claim a reload bonus as a regular online slot game player. It’s a good way to earn free money after your welcome bonus has expired. Typically, an online casino will only match the reload 25-50%.

To claim a reload bonus, make another deposit and opt in to the promotion. Play your favorite online slots and clear the bonus funds, remembering to meet the wagering requirement.

Keep in mind, always view the terms and conditions related to any bonus you are considering. This will help you to understand what you will need to do to maximize your slot bonus. Quick Tip: Be on the lookout for large bonuses with low playthrough requirements.

Slots Tournaments & Leaderboards

Some casinos offer slot tournaments and prize giveaways. Play a number of free spins within the allotted time period. The highest winners will climb the leaderboard and claim a share of a prize pool.

Loyalty Program

As a regular slots player, you will be eligible to join a casino loyalty program. Play regularly and earn points the more you gamble. As you earn player points, you can claim privileges like faster cashouts, free spins and prize giveaways.

Highest Paying Slot Games Online

RankGameRTP Percentage
1Mega Joker99%
2Monopoly Big Event99%
31429 Uncharted Seas98.5%
6Opal Fruits97.5%
7White Rabbit Megaways97.7%
8Medusa Megaways97.63%
9Texas Tea97.35%
10Secrets of Atlantis97.07%

Benefits of Playing Online Slot Sites

The beauty of online slots is that you can spin those reels whenever, and wherever, you like. There's no need to travel hundreds of miles to Las Vegas or your nearest casino. Just load up your PC or casino app, log on, and start spinning in minutes at an online casino in your state.

So, why choose online casino slots over a land-based one? Game variety is the biggest plus. Your local brick-and-mortar casino has space limits that online casinos simply don’t. This means that their online slot games can number into the thousands – and you can sign up at several online casinos and switch between them in seconds. If you live miles away from your nearest land-based casino, you may have very limited choices. Online slots also offer higher payout rates than traditional casino slots, which is one of the biggest reasons for their popularity.

Many online gamblers will be on a budget too. Top slot sites will let you play games for as little as $0.01 a spin. Those kinds of stakes aren't always available in a land-based casino. Of course, high rollers are also catered to. High-limit gamblers can bet for as much as $500 or $1,000 a spin - and even $5000 - at many online slots sites.

Indeed, when it comes to casino games, there are few that are more accessible to newer players than slots because of these advantages:

  • Low minimum betting limits.
  • Large jackpots topping $1 million.
  • Extensive range of options to suit all players.
  • Interactive mini games and bonuses.
  • Multiple ways to win and easy cash out procedures.
  • Auto-play features and in-game help.

Online Slot Games

Online slot sites will offer a wide range of slot types for players. The hardest choice you may have is selecting the best slot games. Here are some of the typical game varieties you should find at the best slot sites in the US, plus the top recommended games for each category.

3-Reel Slots

3-reel games have been around since the earliest days of slot machines. 3-reel games have simple payline structures, a low range of stakes and minimal bonuses.

  • Break Da Bank (Microgaming) 
  • Fire Joker (Play’n GO) 
  • Triple Diamond (IGT) 
  • Mega Joker (NetEnt) 

5-Reel Slots

5-reel slots allow for more paylines and more action. Choose a range of coins and trigger wilds, scatters and big bonus features when you play.

  • Cleopatra Gold (IGT) 
  • Dragon Egg (Tom Horn Gaming) 
  • Friends (Scientific Games) 
  • Wild Wild Riches (Pragmatic Play) 

Classic Slots/Fruit Machine

Classic slots will be familiar to anyone who's played in Las Vegas. Games can come in 3-reel, 5-reel or even 6-reel formats and feature classic fruit symbols such as cherries, melons and plums.

  • Tutti Frutti 5 (Vista Gaming) 
  • Fruit Mania (Gamomat Software) 
  • Buffalo (Aristocrat Gaming) 
  • Flaming 777s (Playson)

Video Slots

Most online slots are video slots. They usually offer superb sounds and graphics, a range of themes, interactive bonus levels and other features. Reel numbers and paylines vary, and some of the best video slots include innovative mechanics and features like Megaways, Cluster Pays and Sticky Wilds.

  • Guns N’Roses (NetEnt) 
  • Medusa Megaways (NextGen)
  • Age of the Gods (Playtech)
  • Moon Princess (Play’n GO)

Progressive Slots

Progressive jackpot slots give you the opportunity to win a huge sum of cash. Unlike fixed jackpots, progressives are linked across networks, and a portion of every bet made on a progressive slot goes toward a linked jackpot. Some progressive jackpots, like Mega Moolah, start at $1 million, and grow from there until the pot is won. Depending on the game, the jackpot can usually be triggered at random or by playing special bonus games.

  • Joker Millions (Yggdrasil Gaming) 
  • Mega Fortune (NetEnt) 
  • Mega Moolah (Microgaming) 
  • Treasure Nile (Microgaming)

3D Slots

3D slots are perfect for players who want to experience the latest HD graphics and sound. 3D games have animated intro sequences, immersive and innovative bonus features and slick soundtracks.

  • Jungle Jim El Dorado (Microgaming) 
  • Flaming Fox (Red Tiger) 
  • Turning Totems (Thunderkick) 
  • Vikings Go To Hell (Yggdrasil)

How To Sign Up At US Online Slot Sites

Our recommended slot sites ensure a straightforward sign-up process so your casino journey will be smooth and fun from the get-go. After shopping around our top-rated sites and finding a casino that piques your interest, you’ll need to create an account with your chosen site. Most will offer new players a casino welcome bonus, so choose a site that offers a slots bonus that appeals to you. Use our experts’ step-by-step guide through the whole process to give you a head start: 

 Step 1: Visit the site 

  • Click the links on this page to head to your chosen casino site.
  • Then, click “Sign up” or “Register”.
  • Complete all necessary fields, such as your full name, email address, DOB, etc, and accept the terms and conditions.

 Step 2: Verify your email/phone 

  • Follow the steps indicated by the operator. For example, you may need to re-access the site through a verification link sent to your email address. 
  • Verify your identity by uploading the documents that the casino requests, such as your passport and utility bill. This KYC proves that you are of legal age and within an accepted gambling location.
  • Once verified, opt-in to any welcome bonuses! 

 Step 3: Make a Deposit 

  • Head to the “Cashier” and click “Deposit.” 
  • Enter your desired deposit amount.
  • Select your preferred payment method and follow all necessary steps to complete the transaction.

Every good online casino will have dozens of video slots available to play for free as well as real money slots. Most casinos split their games by type, and great slot sites will have an entire section (or more than one) dedicated to slot games. The best slot sites will split these games by categories, and let you search for your favorite game or add selected games to a Favorites list.

In the early days of online casinos, you would need to download casino software onto your PC to play, but the technology has advanced so much you can access most sites directly through your browser, whether you play on mobile or desktop devices. As long as you have a secure internet connection and funds in your account, you are ready to play!

Online Slot Tournaments

Put your competitive streak to good use by getting involved in slot tournaments. Available at some of the top US slot sites, these tournaments involve competing against other slot players in a race to first place. The winner is the player who scores the biggest wins throughout the tournament. 

There are all manners of slot tournaments to explore at various operators. Check out Caesars Palace Online Casino in New Jersey and BetMGM NJ Online Casino for some of the best variety. If you’re a high-rolling bettor, slot tournaments have the potential to reward you with extra prizes alongside your regular gameplay.

Payment Options for Online Slots Sites

The best online slot sites will make it easy for you to deposit funds into your account, so you can hit the reels right away. Look for sites that offer a variety of payment options, and if you have a preferred payment method, you can browse for it on the slot sites list. Most sites will offer debit and credit cards, but the better sites will give you a range of other options too.

No matter which option you choose, your payments are fully encrypted and safe from third-party interception.


Exclusive to casinos in the US, Play+ is a cashless prepaid card that offers one of the swiftest transaction speeds on the market. You can find branded Play+ cards at sites like Caesars, BetMGM, and BetRivers Casino in PA.

Credit card

Credit and debit cards are widely available at US casinos. You can use a range of credit cards to make deposits and withdrawals, including Visa, Mastercard, and Discover.


E-wallets are increasingly becoming the preferred way to pay, and PayPal is perhaps the most popular of all. Players with registered PayPal accounts can take advantage of one-tap payments and pre-saved banking details for faster transactions.


Another popular e-wallet, Skrill, operates similarly to Neteller. Make sure to check the T&Cs of any bonus you want to claim, as casinos will often exclude Skrill payments.


Otherwise known as ‘direct payments,’ ACH is an online banking option that lets you transfer funds from one account to another. Due to the high security of ACH transfers, withdrawals can take longer than other payment methods.

The Best Slot Sites Providers in the US

There are dozens of online slots providers currently available in the US. Some of the larger developers now have licenses specific to regulated states, so they can supply online casinos in New Jersey, for example. Each developer offers its own unique game styles and bonus features. Some developers also offer a range of big-money progressive jackpots. These are linked across all participating online casinos in the US.

Aristocrat slots

Aristocrat is one of Australia's oldest and best-known slots manufacturers. As well as producing most of Australia's land-based slot machines for casinos and clubs Down Under, Aristocrat also supplies its most popular games to the Las Vegas market. You can now play hundreds of top Aristocrat slots online and on mobile.

NextGen slots

NextGen is a recognized brand in the online slots industry and forms part of the Canadian firm, NYX. NextGen first supplied legal online casino games such as Doctor Love and Mad Mad Monkey in New Jersey back in 2017.

Microgaming slots

Most players have heard of Microgaming, which was one of the first software developers to create games for the emerging online casino market over two decades ago. In 2022, Microgaming was bought by Games Global so its extensive portfolio of popular video slot games, Blockbuster slots, and progressive slots like Mega Moolah, is now available under the Games Global brand.


One glance at an online casino’s slots library will tell you that IGT is one of the most iconic developers around. Founded in the early 1990s, IGT is responsible for numerous classic slots, including Da Vinci Diamonds, Golden Goddess, and Cleopatra.

Light & Wonder

With over 70 years of industry experience, Light & Wonder, which was formerly named Scientific Games, ranks very highly with US bettors. Switching its attention from physical pinball slots to online gaming, Light & Wonder and its various subsidiaries (including Bally, WMS, and Barcrest) dominate a massive share of the iGaming market.


This Swedish provider is planted firmly within the upper echelons of slot development. Famous for its six- and seven-figure progressive jackpots, you’ll see NetEnt slots like Divine Fortune and Starburst at almost every online casino.

Mobile Slot Sites

As long as you have a mobile device and an internet connection, you can play your favorite online slot games from anywhere and at any time. All of the slot sites we recommend are built on HTML5 technology, meaning you can access them from a mobile browser. However, many casinos have a compatible mobile app available for download. US bettors can enjoy all the best online slots (plus some exclusive mobile-only bonuses) when gambling through a mobile app.

Play Free Slots at Top Slot Sites

At most of the online slot sites available in the US, you will be able to enjoy a range of freeplay and real money slots. The main difference between demo and real money slots is the ability to win cash payouts. 

Free slots don’t require a deposit to play, and you play with virtual currency that has no real money value. This means that you can’t win real money, but you can get a feel for the game, explore its features and learn the paytable without risking your bankroll.

Online Slot Terminology

Online slots have a wide variety of terms that might seem confusing to new players. Here's a handy breakdown of the most common slot phrases:

  • Bet: The wager placed on every spin of the slot.
  • Bonus Feature: A bonus feature can be triggered at random or by landing special symbols on the screen during a spin. Bonuses can range from free spins to a prize wheel with the chance of winning a random prize.
  • Classic Slots: Classic slots often have minimal bonus features and nostalgic symbols such as fruit, bells and BARs.
  • Coins: Many online slots let you adjust the number of coins, and the coin size. A coin might be as low as $0.01 or as high as $100, and you may be able to play for 1-10 coins per spin.
  • Free Spins: Free spins can mean multiple things. Online slot casinos will offer free spins as an incentive to new customers. Then there’s a free spins bonus, which is common to many online slots. Land three scatter symbols and earn a set number of free games, often with a prize multiplier attached.
  • Paylines: The paylines are the available combinations of symbols that will award prizes. You will find the payline layouts in the paytable. You win cash by filling a horizontal line with matching symbols.
  • Paytable: The paytable lists the payouts for all symbols, and any bonus feature details. You will also find information such as RTP (Return to Player percentage) and paylines.
  • Progressive Jackpot: A progressive jackpot is a linked prize made up of portions of every qualifying bet. Usually, 1% of every bet goes toward a progressive. It can be triggered either at random or by activating a special bonus game.
  • Reels: Reels are the vertical drums which spin on every game. Payouts are made by lining up matching symbols on horizontal paylines.
  • RNG (Random Number Generator): Every slot is governed by the outcome of a Random Number Generator. Algorithms determine where the reels stop on every spin. RNGs are routinely tested by approved casino auditors.
  • RTP (Return to Player percentage): The RTP is the theoretical long-term payout made in a slot. Most good online slots will have an RTP of 95-98%, but it doesn't mean a game will pay out regularly.
  • Scatters: Scatters are special symbols that will pay a prize regardless of where they appear on the reels. Simply, scatters don't have to form part of a payline for you to win money. You usually receive a cash payout for hitting at least two scatters, but you may trigger a bonus feature for landing three. These scatter symbols may trigger a free spins bonus or a unique progressive jackpot.
  • Spin: Each “game” on a slot machine, similar to a roll of the dice, a spin of the roulette wheel or a hand of blackjack.
  • Video Slots: Video slots are slots that use computer programs to determine the outcome of spins rather than mechanical components. Video slots first appeared in Vegas casinos in the late 1970s. As microprocessors improved, so did the graphic displays and the bonus features. Video slots now have full HD graphics, touch screen capabilities, and massive linked jackpots across many hundreds of machines.
  • Volatility/Variance: Slot volatility or variance is the frequency with which you hit large or small payouts. A low-variance slot pays out lots of small, but frequent prizes. A high-variance slot may pay out larger prizes but less frequently.
  • Wilds: Wild symbols are jokers that can fill in the gaps in winning paylines. Wilds usually substitute for all symbols other than the scatters. Wilds can sometimes have multipliers attached which help boost the payout. There is also an “expanding wild,” which is a special wild that will stretch to fill all other positions on its reel. It replaces all other symbols in the game to help complete a winning combination.

Our Ranking Methodology: How We Select Our Slot Sites

Our experts consider all sorts of casino features before recommending a slot site to you. That way, you’ll only find the best of the best on this page. Still, here are some of the top qualities that we (and you should) consider before hitting that “Sign up” button: 


We review slot sites’ game portfolios to get a feel for the titles on offer. Alongside plenty of games, we look for a wide range of themes, RTPs, bet limits, and bonus features. That way, you’ll never get bored when spinning the reels of slots or playing your cards right. Our experts enjoy finding game lobbies fit to burst with exciting content by top software providers. 


Even before you’ve hit the “Promotions” section, you’ll likely be welcomed by an attractive sign-up bonus on the casino’s home page. We investigate all offers terms and conditions to ensure they’re fair and check that promotions are available to regular players, too. 


Reading our reviews is the best way to judge a platform’s reliability. However, to find the most reputable online slot sites, checking their licenses is a great place to start. Before recommending them on this page, we’ll always ensure that casinos hold valid licenses and adhere to strict player safety, fair gaming, and data protection standards.  


Our top recommended casinos use SSL encryption technology to ensure that your personal and payment data remains safe and out of the hands of potentially harmful third parties. We also ensure that games are externally audited and use RNGs (Random Number Generators) to ensure fair and random outcomes.  

Deposits and Withdrawals 

Top casinos offer a variety of payment methods to ensure deposits and withdrawals are efficient and fuss-free. Finding a platform that provides your preferred method is vital to your online slot spinning experience. We look for casinos offering debit/credit cards, e-wallets, bank transfers, and more. 


We scout for casino platforms built on HTML5 technology – and most are. This tech ensures that a site transfers seamlessly from your desktop to your mobile device for the ultimate casino experience on the go. We also look for casinos that offer native online casino apps for that bespoke mobile gaming experience. 

The Best Online Slot Sites: Our Verdict

After careful consideration, our experts rank BetMGM as our number one slots casino. BetMGM Casino is home to over 2,700 real money slots, including 150 progressive jackpots offering prize pools of up to $2 million. Coming in close second and third are BetRivers and Borgata, both offering upwards of 1,000 slot titles. 

So, now you’ve got all the information you need, why not register for an account at one of our top recommended sites today? So you can spin the reels of some of the most popular and highest-paying slot titles around.

Find the Best Slots Sites Here

Our experts have unearthed the very best online slot sites with the best selection of slot games and fantastic bonuses and promotions. Whether you're looking for a top regulated online casino in New Jersey, Pennsylvania or any other state with legal online casino gaming, we have it covered. At, you can use our comprehensive list of slot sites to get to the best places fast.

It’s tough to know what to believe when you are on the internet trying to do your own research. That’s why we do the heavy lifting for you, and you can trust our process to find you the best legal and regulated online slot sites in the US. Sign up for free, claim a bonus and start your US slots journey off the right way.

Meet The Author

Emma Trotter
Emma Trotter
Editor Editor

Emma Trotter is a Senior Editor at Emma has worked as a staff writer and editor for nearly two decades, extensively covering celebrity news and the Las Vegas entertainment, casino and tourism scenes. She spent several years in in-house roles at Caesars Entertainment and Wynn Las Vegas before stepping into iGaming affiliate site content.

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