12 Bolts of Thunder is an electrifying Norse mythology slot by Thunderkick. The slot game runs on a highly volatile math model with a 5x4 setup and 20 paylines. It features instant hammer prizes in the base game, which are upgraded in the bonus round for a total projected win of 30,000x the bet. In my experience, these hammers can land pretty often on the reels, so despite the lack of other features, it’s a pretty solid feature.
Besides the great winning potential, the 12 Bolts of Thunder slot is all about having fun. It comes with several great features inspired by Norse mythology. Although you won’t see Odin or Thor anywhere, there are elements directly attached to them that can wreak havoc on the reels and electrify your wins.
This fast-paced game holds many surprises and is quite entertaining to play. It’s also quite colorful and uplifting, which isn’t always the case with the moody Norse niche. It’s easy to play, too, featuring Thunderkick’s familiar design. You can try the 12 Bolts of Thunder online slot on your computer or mobile phone for free or real money at most real money online casinos.
The 12 Bolts of Thunder slot has a regular 5x4 reel set. There is nothing unusual there, except for the paytable on the right side. It looks like a regular scatter pays ladder, usually seen on the left side of the reels. However, this time, it’s on the right side, and you can get cash prizes for landing Thor’s hammer. We’ll talk more about this feature later.
Instead of a bleak landscape, the developer has opted for a colorful slot game. The symbols are painted in bright colors and include well-known elements from Norse mythologies. Those include the already mentioned hammer, a door/portal to Asgard, a horseshoe, and a few vintage slot symbols such as bells and BARs.
All the controls are beneath the reels. It looks quite alright the way it does, so you shouldn’t have trouble playing 12 Bolts of Thunder on any device.
Landing a few hammers is not uncommon, although hitting the higher numbers might be a bit harder.
The easy learning curve makes playing the slot a breeze. It starts with you setting your bet, which goes between 10c and $100 per spin. That’s a range wide enough for most players. Choose a bet and hit the spin button on the right, which has been nicely stylized to fit the theme.
There’s nothing unusual about the highly volatile math model. You win by landing three or more matching symbols on an active payline. Wilds are there to substitute for any other symbol in a winning combination, but they don’t pay on their own. The symbol set is completed by a scatter, which plays the bonus-triggering role.
The highlight in the 12 Bolts of Thunder slot is the hammer ladder on the right side. This simple scatter prize ladder pays up to 12 scatters on the reels. Of course, the maximum prize is for 12 scatters, which don’t land often. If you land them, the prize is 1,000x the bet in the base game. We’re saying the base game because the cash prize ladder is upgraded in the bonus round.
The bonus round comes to life when three or more scatters hit the reels. You get the corresponding hammer cash prize despite triggering 6, 9, or 12 bonus spins for three, four, or five scatters. Every hammer that lands on the reels upgrades the hammer prize ladder.
If the prizes go as high as 1,000x the bet in the base game, they can be upgraded up to 30,000x the bet in the bonus round. The prize table can be upgraded a total of 5 times. Every time you upgrade it, you also receive three bonus spins. In that way, you can earn a maximum of 15 extra spins. That number might be a bit hard to hit, but it’s possible.
Luckily, there is a bonus buy feature that you can use if you don’t want to wait for the bonus buy slots round to trigger organically. It costs 100x the bet, but it also raises the RTP figure to 96.5%.
My experience playing the 12 Bolts of Thunder slot game has been very positive. The base game was pretty fun to play, thanks to the hammers. Otherwise, it would have been a bit bland. Landing a few hammers is not uncommon, although hitting the higher numbers might be a bit harder.
I couldn’t get to the bonus round despite landing a couple of hammers several times. For the purpose of my 12 Bolts of Thunder review, I paid the 100x to get to the bonus round. I managed to upgrade the scatter prizes a maximum of two times, winning a lucrative reward in the process. The bonus round was way more fun than the base game, thanks to the higher prizes and the extra spins.
The slot’s RTP of 96.15% is decent, considering the lack of major features. It’s a highly volatile slot game with a maximum projected win of 30,000x the bet, which is good enough for high rollers.
12 Bolts of Thunder is a familiar yet entertaining slot for fans of Norse mythology games. It doesn’t feature Thor, Odin, or Loki for a change, although they’re there in spirit. The scatter cash prize ladder is not the most innovative, but it’s good enough for most players. More importantly, the prizes in the bonus round are five times higher, with a maximum projected win of 30,000x the bet.
If you’re looking for similar slot games at top casinos, I can recommend 9 Masks of Fire and 9 Pots of Gold. Both feature scatter pay prizes and are developed by Gameburger Studios in collaboration with Games Global. Their payment potential is not as high as 12 Bolts of Thunder, but they’re solid games as an alternative.
Karolis Matulis is an SEO Content Editor at Casinos.com with more than 5 years of experience in the online gambling industry. Karolis has written and edited dozens of slot and casino reviews and has played and tested thousands of online slot games. So if there's a new slot title coming out soon, you better know it – Karolis has already tried it.
The 12 Bolts of Thunder slot was developed and released by Thunderkick. One of the most popular studios on the market, Thunderkick has released many solid releases, including hits such as Midas Golden Touch, Esqueleto Explosivo 1 and 2, and Hellapenos.
Yes, you can. The slot’s demo should be available at most Thunderkick online casinos. If you want to play for free, you might not even need an account. You can try the slot and see if you like the features before you play for real money.
You can play the 12 Bolts of Thunder slot for real money at the best Thunderkick casinos. In order to do so, you will need to register at the casino first. That will allow you to make a deposit using a trusted payment method, after which you’ll be free to play with real money.
The 12 Bolts of Thunder slot was released on January 31, 2024.
Yes, the slot does have a free spin round. To trigger it, you’ll need three or more scatters. All the instant prize hammers are updated in the bonus round up to five times. The maximum winning potential increases to 30,000x the bet, and for each hammer prize upgrade, you get a couple of new spins.
The RTP is set to a solid 96.15%. That’s right above the average for highly volatile slots. I prefer slots with an even higher RTP, but that’s impossible here due to the instant cash scatter prizes. With such great winning potential, I don’t think many players would complain.
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