The Thunderstruck series includes two slots, Thunderstruck and Thunderstruck II, its sequel. Both are 5-reel 30-payline slots with some additional features. The first chapter is a classic video slot, one of the well known games by Microgaming. Its design and graphics may look a bit dated nowadays, but the story of the Scandinavian gods is still something worth your attention. The good news is that this game still has the Free Games feature, which can be triggered with three scatters.

Thunderstruck II has the revamped design and enhanced graphics, while the free spin feature is still there, giving you a chance to hit some nice winnings.

The winnings in Free Spins are tripled in both games of the series, which makes this bonus feature even more exciting.

Overall, this is a great Microgaming slot series, especially its second part.