Thunderstruck II Slot Review

Gamblers Pro rating

Welcome to our trusted Thunderstruck II slot review.

As far as Microgaming slots go, Thunderstruck II is one of the greats. This is the follow-up to the original Thunderstruck slot and the theme takes us back through time to ancient Nordic culture and their gods.

Symbols include Loki, Valkyrie, Odin, Thor, an ancient ship, Thor's hammer, and a mystical castle in the sky. The background music is epic, giving the game a magical feel.

Yet, it takes a lot more than a great theme to make a top slot. What else does Thunderstruck II offer? Let's find out.

Pros & Cons

  • Extra wild symbols
  • Free spins bonus round
  • Trusted software
  • No progressive jackpot


Game Information


243 Ways to Win - Rather than traditional paylines, you make wins by landing three or more matching symbols on adjacent reels. Wins start from the left symbol.
Wildstorm - This is a random feature which can strike at any time. When it does, up to five reels can turn wild. When this happens multiple large wins can occur simultaneously.
The Great Hall of Spins - This is the main Thunderstruck II feature and it's actually four free spins rounds built into one.

You unlock it by landing three or more of Thor's hammers on the reels at the same time. You begin with the Valkyrie free spins round and you unlock new rounds by repeatedly re-triggering this feature.

There are four free spins rounds in total, as follows.

Valkyrie Free Spins - This round is available the first time you trigger The Great Hall of Spins. It's 10 free spins with all wins boosted by x5. Free spins can also be re-triggered.
Loki Free Spins - You'll unlock this feature when you have reached The Great Hall of Spins five times. It's 15 free spins with an extra 'Magic Wild' feature. When this symbol lands on the middle reels it turns other symbols around it wild.
Odin Free Spins - You can access this round once you trigger The Great Hall of Spins 10 times. It's 20 free spins with extra Odin's raven symbols which can turn other symbols on the reels into x2 or x3 multipliers. If both of Odin's ravens land it will create a x6 multiplier.
Thor Free Spins - This round is accessible once you have triggered The Great Hall of Spins 15 times. You get 25 free spins with rolling reels.

Rolling reels means each time a winning combo is created the symbols vanish and are replaced by new ones. This can lead to a few consecutive wins in a row.

A dynamic multiplier means each time you create a consecutive win the next one is bigger. It ranges from x2 to x5.


There's no doubt that the Great Hall of Spins means Thunderstruck II has one epic bonus feature. This is the main reason for its legendary status among Microgaming video slots.

However, the jackpot isn't huge and it's a little dated at this point in time. We enjoyed it, but there are better Microgaming slots online.

Give it a spin on the free version above to see what you make of it.