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Thunderstruck is arguably the most popular online casino slot, has been around since 2004 and has a shade over 95% expected return. It is a 5-reel, 9 payline slot, developed by Microgaming, and is available at all Microgaming powered online casinos, both in the download casino and in the Flash version where available. Interestingly, the Flash version feels “chunkier” and much more playable to me, so I tend to play that version more.

The facet of Thunderstruck that keeps most people going back is the 15 free spins bonus, where all winning spins are trebled (x6 if it includes a wild “Thor” symbol). It turns up fairly regularly (although this is a medium variance slot, so watch out for long dry spells) and is triggered by three orange Scatter Rams anywhere in view. On average, you’ll get around 30x payout from the free spins, but I’ve had up to 500x on a good day, rare though it is, and fairly regularly get 75-100x.

If you are lucky enough to get all 5 scatter Rams in view, you get 500x your triggering bet plus the 15 free spins! Now this is rare, but I’ve had it once so I know it happens. Also worth noting is that 3 or more scatters appearing again during the free spins retriggers another 15 spins.

Aside from the bonus, the Thunderstruck slot paytable is also well weighted, with 5 “Ice Hammers” or 5 “Staffs” giving you 750 coins, or 1,500 if it includes the “Thor” wild symbol. 5 Thors is worth 10,000 coins…now that I haven’t seen. Yet. The balance in Thunderstruck means that it’s a very playable slot, even if you are not getting the bonus round. It keeps you in a state of anticipation and that can be a good thing…and a bad thing. Watch your budget.

Play for real money

Before you click on any UK online casino link, please keep in mind that not every time you can win and losing every now and then is simply part of the game. Never play in casino for real money you need for every day life.

If you enjoyed playing Thunderstruck, try to play for real money in the online casinos we recommend. You can find the list on left or right side of the website.

All the UK casinos offer a really nice online casino welcome bonus, so pick one up to your preference. Please note, when it comes to bonuses, the amount you are getting is important, but the full terms and conditions are even more important. It makes a difference if you are getting 50% up to 100£ or 100% up to 100£. In the first case to get the promised bonus 100£ you have to deposit 200£ in the second case 100£. Besides the percentage, there is also wagering important and the bonus might not apply to all casino games.

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Casino Game information

Title Thunderstruck
Game Platform Microgaming
Lines 9
Reels 5
Graphics 2/10
Sound Effects 2/10
Entertainment 5/10
Game Library GameHub
Game Free Slots



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