If you thought Thunderstruck was one of the best Thor-based slots around, you’d be right. But how to improve the unimprovable? Thunderstruck II does just that. It ups the paylines, bonuses and gives you a classic runic design which has inspired slots like Asgardian Stones. With five reels, 243 Ways to Win and the Norse gods on your side, you’ve got all you need to play towards 8,100 times your stake.

Pros & Cons

  • 5 reels, 243 Ways to Win.
  • Epic soundtrack.
  • Amazing Great Hall of Spins Bonus.
  • Thor isn’t quite Chris Hemsworth.
  • Thor feature isn’t as lucrative as it could be.
  • Starting to show its age.

How To Play

Thunderstruck II is played on a blue, runic reelcase, across 243 paylines. The coin and betting options are clearly signed at the bottom of the screen, with the big SPIN button to the right. If you want to learn more about the paylines and game features, select the VIEW PAYS button. Alternatively, you can click or tap on a symbol to see the available payouts. Once you’ve made a spin and the symbols fall into place, winning combinations enjoy neat animations to highlight your wins.


The card values Nine to Ace are the low paying symbols as we might find in many Online slots, while the higher paying symbols on this game feature the Nordic gods. This includes Thor, Odin, Loki and Valkyrie along with a Viking Longship, Rainbow Bridge. Thor’s Hammer is the Bonus symbol and the Thunderstruck II logo is the game’s Wild.


The main feature on Thunderstruck II is the Great Hall of Spins, which lets you advance through it the more times it’s triggered.

Bonus Name Bonus Explanation

This is triggered at random during the base game and turns up to five reels fully Wild, giving you 1,000 times your stake.

The Great Hall of Spins - Initial Bonus

When you get three, four of five of the Bonus symbols, you’ll get one, two, 20 or 200 times your stake. Then you advance through the hall.

The Great Hall of Spins - Valkyrie

The first time you trigger The Great Hall of Spins, Valkyrie has your back. You get 10 Free Spins with a x5 Multiplier, which can be retriggered.

The Great Hall of Spins - Loki

After you’ve completed Valkyrie’s level four times, the Loki feature becomes available. Now you get 15 Free Spins and the Wild Magic feature. These symbols land on the third reel and transform symbols into extra Wilds. You also have the chance to win additional Free spins or Bonus symbols.

The Great Hall of Spins - Odin

After the tenth time you’ve triggered the Bonus round, it’s Odin’s time to shine. You unlock 20 Free Spins and the Wild Raven feature. The Raven symbols can turn symbols into Multipliers. Two Ravens give you a x6 Multiplier.

The Great Hall of Spins - Thor

It’s fitting that Thor delivers the final bonus variant, unlocked after you’ve entered the hall 15 times. Here you get 25 Free spins with Rolling Reels. Consecutive wins increase the Multiplier, with the chance to get up to a 5x Multiplier. Despite being the last round to get to, it’s not the most generous – we have the trickster god, Loki, to thank for that.

Thunderstruck II Slot Details

Developer Paylines Reels Min Bet Max Bet Min Coins Max Coins RTP(%) Jackpot Released
blank 243 5 0.30 15.00 0.01 0.05 92.05% 2,400,000 2010