Get up to £500 FreeJackpotCity Casino offer you up to £500 free to play the Thunderstruck II slot game – read about the classic below.

The Thunderstruck II slot is a Microgaming-powered game with 5 reels and 243 ways to win. It has become a cult classic due to its superb bonus features and superb graphics. Based on Norse mythology, you will see characters like Thor, Odin, Loki and Valkyrie. You can play from 30p to £15 a spin.

It has a superb Wildstorm feature which is triggered at random in the base game. Up to 5 reels can completely turn wild with 1 re-spin awarded – this can result in very big wins. However, the main bonus feature is The Great Hall of Spins feature which is triggered by obtaining 3 or more Bonus Hammer symbols on the reels.

This is a 4 level bonus feature – you can reach the subsequent 3 levels by triggering the bonus feature a certain amount of times. Details are below:

Valkyrie Bonus feature – this is played on your 1st to 4th feature triggers and you will receive 10 free spins with a 5x multiplier. The good thing is that you can trigger more free spins too.

Loki Bonus feature – this is available on your 5th to 9th feature triggers. You will get 15 free spins with the Wild Magic feature. The Wild Magic symbol on the middle reels transforms random symbols into wilds for bigger wins.

Odin Bonus feature – you will play this feature on the 10th to 14th feature triggers. You receive 20 free spins with the Wild Raven feature. The Odin’s Ravens symbols can turn symbols into 2x or 3x multipliers. If you get 2, you will be awarded a 6x multiplier.

Thor Bonus feature – this is available once you’ve trigger the feature 15 or more times. You will get 25 free spins with Rolling Reels. What this means is that the multiplier value will increase between 2x and 5x when you have consecutive wins. This is by far my favourite feature.

The good thing about The Great Hall of Spins feature is that it remembers where you left off meaning that you can come back to play Thunderstruck II and not lose your progress. You can see this is the progress bar at the bottom of the screen. Once you have activated all 4 levels, you can choose any of the 4 to play.

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