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Home » Slots » Free Slots » Thunderstruck Slot Demo

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Thunderstruck slot demo
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Thunderstruck Slot Demo

Updated November 19, 2025

Join the god of thunder in this classic slot from Microgaming, now owned by Games Global. Medium volatility, a 96.10% RTP and free spins where all wins are multiplied by 3: you can try it all for free with our Thunderstruck slot demo, or discover more games in our online demos library.

Our verdict on Thunderstruck – 7/10

The Thunderstruck slot was released back in 2004, and it’s only logical that it doesn’t match the top online slots with more features, modern graphics, and inventive bonus rounds. The game is straightforward, and new players won’t have a hard time understanding all its mechanics, but it’s a little too simple for us.

We liked the multiplier applied to all wins during the free spins rounds, but we think other titles from the Thunderstruck series, such as Thunderstruck 2 or Thunderstruck Stormchaser, might have more to offer.

  • Feature Score

    7

  • RTP

    96.1%

  • Volatility

    Medium

  • Progressive jackpot

  • Min. BET

    £0.09

  • Max. BET

    £4.5

5 reasons to play Thunderstruck

We tested Thunderstruck for a while and got a pretty good idea of why this game could be worth a try for UK players:

  • 3x Multiplier During Free Spins: Any win during the free spins is automatically multiplied by 3, making these bonus rounds even more worthwhile. If you want to land the highest possible payout (3,333x), you’ll have to trigger this feature first!
  • Balanced Gameplay: Coming with a 96.10% RTP, right in the average for online slots, and medium volatility, Thunderstruck has a balanced gameplay, with regular small payouts and the occasional big win. The perfect combo for casual players.
  • Classic Slot: This slot was released more than 20 years ago, making it one of the oldest online games out there. If you want to explore the origins of more modern slots, and other Thunderstruck titles, you might want to check out this one.
  • Simple Rules for New Players: Only 9 paylines, a base game without any modifier or feature, and just one free spins bonus. Thunderstruck is tailored for new players who don’t want to feel lost with intricate mechanics. A great game to enter the world of online slots.
  • High Value Symbols: Symbols in the base game bring higher values than on most slots we’ve reviewed. You can get wins up to 90x your bet simply by landing 5 hammers in a payline. Wilds and scatters pay even more, with a max win of 1,111x your bet for 5 Thor wilds.

Themes

  • Classic themed slotsClassic
  • Mythology themed slotsMythology
  • Vikings themed slotsVikings
4.0 /5
Rating from 10 votes
Great fun!
50%
Nice and simple!
33%
Loved the bonus round!
17%
How was it?
Leo Vegas

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Bonus for New Players

More Information

Reels
5
Paylines
9
Gamble feature
No
Autoplay
No
Bonus rounds
  • 15 Free Spins with 3x Multiplier
Software provider

How to play the Thunderstruck Slot Demo?

We already mentioned in our Thunderstruck slot review that the game is straightforward, with 9 paylines, simple rules and just one bonus feature. Before describing its symbols, their values, and the free spins bonus, let’s see how the base game goes.

Step-by-Step Gameplay

  • Launch our slot demo for some Thunderstruck free play.
  • Place your bets, from £0.09 to £4.50.
  • Spin the reels, and look for wins on one of the 9 paylines.
  • 3 or more bonus symbols trigger 15 free spins.
  • Once your win is collected, or once free spins are done, the round ends.
  • Adjust your bet if necessary, then spin again!
Thunderstruck Slot Demo

Thunderstruck Slot Symbols and Features

In order to get a payout in the Thunderstruck slot, you’ll need to match at least 2-3 symbols in one of the 9 paylines. There are 13 symbols in your reels, from the lowest paying ones (Card symbols, from 9 to Ace) to more valuable items and characters. Hammers and the hand wielding Mjölnir pay up to about 90x your bet for 5 of a kind in a payline. Thor Wilds (substituting any symbol to create a win) and Rams Scatters are the most valuable ones, paying up to 1,111x. Wilds also double your payout when they’re part of a winning combo.

Thunderstruck bonus trigger

If you land at least 3 scatters in a single spin, you’ll unlock 15 free spins. During those spins, each win you land will be multiplied by 3, so that you can try and reach the 3,333x max win. You might also retrigger 15 spins by landing 3, 4, or 5 more scatters. Simply said, these free spins are the best opportunity for you to land great wins!

Thunderstruck Big Win

Visuals and theme

Released back in 2004, Thunderstruck’s visuals show their age, but their classic style still carries some nostalgic charm. The slot’s design is simple, with bright, comic-like illustrations of Norse mythology: rams, hammers, and castles, set against a stormy sky filled with lightning. While the artwork lacks the polish of modern titles, it’s still easily recognizable. 

There’s minimal animation, with only the symbols pulsing or flashing when part of a winning line, but it suits the game’s old-school appeal. Combined with thunderous sound effects (but no real soundtrack), Thunderstruck remains a true classic of early online slots.

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Thunderstruck RTP and volatility

Thunderstruck comes with a 96.10% RTP, putting it right around the industry average for online slots. In practice, this means that for every £100 wagered, players can expect around £96.10 back over time. As always, this number is theoretical and doesn’t guarantee any specific outcome. 

With medium volatility, Thunderstruck offers a more balanced experience than high-volatility Megaways titles. Wins appear at a steady pace, blending frequent smaller payouts with the occasional larger hit. The game’s maximum win sits at 3,333x your bet, making it appealing to players who enjoy steady gameplay with a fair shot at a substantial reward.

Thunderstruck Slot Review on Mobile

We tested Thunderstruck on our iPhone 15, and it performed flawlessly. Thanks to its clean design and simple visuals, the slot runs smoothly even on older phones, maintaining fast loading times and fluid animations. The user interface adapts neatly to different screen sizes, and the controls remain intuitive in both portrait and landscape modes. All bonus features, including the Free Spins round, worked seamlessly on mobile. Whether you’re playing from home or on the go, Thunderstruck delivers a reliable and enjoyable mobile experience without sacrificing the classic look that made it one of Microgaming’s most iconic releases.

Where can you play Thunderstruck Slot in the UK?

If our Thunderstruck slot review has sparked your interest in this title, and if you’re ready to try it for real, these are some of the best online slots sites where you’ll find it. Upon registration, you’ll even get a generous welcome bonus to get started:

Minimum deposit: £10

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Free spins: 50 Free Spins

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Our Final Thunderstruck Slot Review

Our final verdict on Thunderstruck is that it’s a straightforward, classic slot with nostalgic visuals, simple mechanics, and a balanced 96.10% RTP. The 3x multiplier during free spins and high-value symbols make it appealing, especially for newcomers. While it lacks modern features, it remains a solid, enjoyable game for casual UK players.

alexandre fossier
Alexandre Fossier Online casino expert
121 articles

Alex’s expertise in the igaming world comes from his experience as a content manager at Better Collective, where he spent more than 2 years creating engaging articles for top global brands like bet365 and 1xBet. His expertise as a player, however, came well before that, first with sports betting, then online casinos, where he developed a keen eye for great UX and intuitive designs.

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