12 Bolts of Thunder Slot Review

3.9/5
Based on our expert’s review. Reviewed by
Thunderkick Slots
Review by
Daisy Harrison
Updated: 31/01/2024
Review by
Daisy Harrison
Updated: 31/01/2024

Float amongst the clouds but watch out for the wrath of Thor, in the 12 Bolts of Thunder slot by Thunderkick. Played on 5 reels with 20 paylines, big wins come via the Hammer Symbol. In the base game multiplier scatter prizes can reach up to 1,000x, but it’s during the Free Spins feature that things really take off. Upgrade the Hammer Paytable for your chance to pocket max wins of 30,000 x your stake. With a healthy 96.15% RTP and a high volatility, find out more in our 12 Bolts of Thunder review.

Max Win
30,000 x bet
Play
T&Cs Apply

18+. New customers. Opt-in required. 20 Bonus Spins on “Sahara Riches Cash Collect” at 10p per spin and 100% Deposit Bonus up to £100 on first deposit (payment method and play restrictions apply). Min. deposit £10. 30x wagering for Bonus Spins and Deposit Bonus (game weighting applies). Max. £5/spin or £0.50/line. 30 days expiry. Please gamble responsibly • www.begambleaware.org #ad

Provider
Thunderkick
Type of Slot
Video Slot
Theme
Mythology
Reels
5
Paylines
20
Stakes Range
10p to £100
Bonus Features
Yes (3)
Free Spins/Multiplier
6-Unlimited/2-30,000x
Max Win
30,000 x
RTP
96.15%
Volatility
High

12 Bolts of Thunder Demo

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T&Cs Apply 18+. New customers. Opt-in required. 20 Bonus Spins on “Sahara Riches Cash Collect” at 10p per spin and 100% Deposit Bonus up to £100 on first deposit (payment method and play restrictions apply). Min. deposit £10. 30x wagering for Bonus Spins and Deposit Bonus (game weighting applies). Max. £5/spin or £0.50/line. 30 days expiry. Please gamble responsibly • www.begambleaware.org #ad
18plus uk-gambling-commission online-slot-co-uk-logo agechecked-verification-provider
T&Cs Apply 18+. New customers. Opt-in required. 20 Bonus Spins on “Sahara Riches Cash Collect” at 10p per spin and 100% Deposit Bonus up to £100 on first deposit (payment method and play restrictions apply). Min. deposit £10. 30x wagering for Bonus Spins and Deposit Bonus (game weighting applies). Max. £5/spin or £0.50/line. 30 days expiry. Please gamble responsibly • www.begambleaware.org #ad

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12 Bolts of Thunder RTP, Details & Wager Limits

Reels/Paylines: 5 reels + 20 paylines.

Stakes Range: 10p to £100 per spin

Max Win: 30,000 x stake

RTP: 96.15% | 94.12% | 87.19%

The 12 Bolts of Thunder slot is played across 5 reels, 4 rows and with 20 fixed paylines. With a pretty standard layout, creating a win is also straightforward. Simply land 3+ matching symbols on adjacent reels, from left to right, starting on the leftmost reel.

You can play the slot for as little as 10p up to £100 per spin. This wide betting range, found in many Thunderkick slots, makes the game perfect for all players. To adjust your bet click the total bet amount below the reels.

Outside of the UK, you’ll also find an Autoplay button. Use this to spin up to 5,000 times without clicking. If using Autoplay, remember to set win and loss limits to protect your bankroll.

12 Bolts of Thunder has a maximum RTP rate of 96.15%. However, 94.12% and 87.19% versions exist too. Make sure you’re playing at a recommended slot site and always check the paytable to see which RTP variant you’re playing.

The slot has a high volatility level and the hit frequency rate is 21.79%, if playing the 96.15% version. This means that just over 1 in 5 spins will be winners. Finally, aim for max wins of 30,000 x your stake. These are available during the free spins feature, which we’ll talk more about later.

Theme – is it a bird? Is it a plane? No it’s hammers in the sky

Theme: Mythology

High Value Symbol: Triple 7s

Compatibility: Mobile, Tablet, Desktop

12-bolts-of-thunder-slot-base-game

The 12 Bolts of Thunder slot has a mythological theme, loosely based around Thor, the hammer-wielding Norse god of storms, thunder and lighting. The reels hang somewhere in the clouds, with a bright blue sky behind then. It might look more like The Simpsons intro than anything else, but overall It’s attractive and clean.

On the reels, lower paying symbols include Jack to Ace royals. High value symbols are also represented by classic horseshoes, bells and bars. The triple 7s symbol is the highest paying, rewarding you with 20 x your stake for a 5 of a kind combination.

In terms of special symbols, expect wild and scatter symbols acting in the regular way. Alongside them, however, are hammer symbols. Land 4 or more of these to gain a ‘Hammer Win’.

Symbol Payouts/Info
12-bolts-of-thunder-slot-jack-symbolJack 3, 4 or 5 = 0.5, 1 or 1.5 x stake
12-bolts-of-thunder-slot-queen-symbolQueen 3, 4 or 5 = 0.5, 1 or 2 x stake
12-bolts-of-thunder-slot-king-symbolKing 3, 4 or 5 = 0.5, 1 or 2.5 x stake
12-bolts-of-thunder-slot-ace-symbolAce 3, 4 or 5 = 0.5, 1 or 3 x stake
12-bolts-of-thunder-slot-horseshoe-symbolHorseshoe 3, 4 or 5 = 1, 2 or 5 x stake
12-bolts-of-thunder-slot-bell-symbolBell 3, 4 or 5 = 1.5, 2.5 or 10 x stake
12-bolts-of-thunder-slot-bar-symbolBar 3, 4 or 5 = 2, 3 or 15 x stake
12-bolts-of-thunder-slot-7s-symbolTriple 7s 3, 4 or 5 = 2.5, 3.5 or 20 x stake
12-bolts-of-thunder-slot-wild-symbolWild Substitutes for symbols above
12-bolts-of-thunder-slot-scatter-symbolScatter 3+ triggers Free Spins feature
12-bolts-of-thunder-slot-hammer-symbolHammer 4+ awards Multiplier Prize

12 Bolts of Thunder mobile

12-bolts-of-thunder-mobile-slot

Like all Thunderkick slots, 12 Bolts of Thunder is optimised for mobile play, With HTML5 technology, you can enjoy it on iOS and Android devices, as well as desktop and tablet. The simple layout and graphics make it perfect for smaller devices too.

12 Bolts of Thunder Bonus Features

12 Bolts of Thunder boasts 2 main bonus features, plus a Bonus Buy option for players outside of the UK. This includes hammer wins and free spins. Let’s take a look at how to trigger them, and how rewarding they are.

Hammer Win Feature

As we just mentioned, Hammer Wins are awarded when 4-12 Hammer symbols appear on reels 2, 3 or 4. The size of the win directly relates to the Hammer Paytable, which you’ll find to the right of the reels.
In the base game, the multiplier levels in the Hammer Paytable are 2x, 5x, 10x, 15x, 20x, 50x, 100x, 500x and 1,000x.

Free Spins Feature

12-bolts-of-thunder-slot-free-spins

The free spins feature triggers when you land 3+ scatters. You will receive 6, 9 or 12 free spins for landing 3, 4 or 5 scatters respectively.

During free spins, any Hammer Wins unlock a new level on the Hammer Paytable. The paytable can be upgraded 5 times in total, giving you a maximum award of 30,000x for 12 Hammer symbols at the highest level.

Each Hammer Win also gives you 3 extra free spins.

Bonus Buy Feature

Outside of the UK, you can buy immediate entry into the Free Spins round. This costs 100 x your current bet. The RTP also increases to 96.5%.

12 Bolts of Thunder Slot Review Summary – classic mechanisms with big wins

3.9/5
Based on our expert’s review. Reviewed by
12 Bolts of Thunder Slot

12 Bolts of Thunder may not be wholly original, but huge max payouts make it stand out from the crowd. Scatter prizes throughout the base game and free spins are rewarding and exciting.

What we liked
  • 30,000 x stake max wins
  • Simple yet effective design
  • Multipliers in base game and free spins
What we didn't
  • High volatility
  • Similar to other slots

12 Bolts of Thunder is a simple but effective slot. The design has that Thunderkick touch, though the graphics are a little more paired back than usual. If you contrast the theme with Hellapenos, it feels a little underdone but there’s definitely a charm about it.

The gameplay is also quite straightforward. The slot uses similar mechanisms to the likes of 9 Masks of Fire, though the main difference here is the size of prizes available. The key to winning big is to level up the Hammer Paytable, and this actually happens more than you may think.

Overall, 12 Bolts of Fire is definitely a challenging slot with a lot going for it. You may have to bide your time and fight the high volatility to win big, but scatter prizes of up to 30,000 x your stake are worth it.

If the scatter paytable appeals to you but you’d like more ways to win, try 9 Pots of Gold Megaways by Microgaming. This slot boasts up to 117,649 Megaways, unlimited free spins and max wins of 5,000 x stake. Alternatively, if you enjoyed Thunderkick’s take on Norse mythology, we recommend Odin’s Gamble. With 19,333 x stake max payouts and multipliers worth up to 22x, it’s another high volatility game with excellent graphics.

12 Bolts of Thunder FAQs

What is the 12 Bolts of Thunder RTP?

The 12 Bolts of Thunder slot has an RTP rate of 96.15% which is above the online slots average of 96%. High volatility, the slot has a 21.79% hit frequency rate and the RTP rate also rises to 96.5% if you use the Bonus Buy feature.

What is the 12 Bolts of Thunder max win?

12 Bolts of Thunder offers max wins of 30,000 x your stake per spin. To win the top prize, you need to enter the Free Spins feature and unlock the 5th level of the Hammer Paytable. Then, land 12 Hammer symbols to achieve max wins.

Are there any 12 Bolts of Thunder free spins?

Yes, land 3 or more scatters in the base game to trigger the Free Spins feature. You receive between 6-12 free spins depending on how many scatters you land, and you gain 3 extra spins for ever Hammer Win during the feature.

Is there a 12 Bolts of Thunder demo?

Yes, you can join Thor in the clouds and play the 12 Bolts of Thunder slot demo here at Online-Slot.co.uk. Our free version of the games is available on mobile, tablet and desktop.

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