Thunderstruck II Slot

Thunderstruck II Slot

Released in 2010, Thunderstruck II has quickly become one of the most popular online slots games. Microgaming’s latest version of the 2004 video slot, its new features include Wildstorm and The Great Hall of Spins which offer fantastic bonuses for players.

With five reels and 243 permanent ways to win the game, let’s take a closer look at Thunderstruck II.

Norse Theme

The identifiable characteristic of the Thunderstruck series is the Norse mythology theme. With the new version, the graphics present defined detail and sharp designs for an enhanced gaming experience. From Loki to Valkyrie, Odin, and Thor, you will find all the characters you love on the reels, and each comes with their separate rewards.

The cinematic soundtrack holds a nostalgic tone of its predecessor while taking you on a journey through Asgard. Plus, its availability on desktop, iOS and Android makes it easy to access wherever you are. However, there are some inconsistent echoes of generic poker symbols in the design. The presence of 9 through Ace feel out of place compared to the bonus symbol of Thor’s hammer.

Return To Player (RTP)

The RTP rate comes in high for an online slot at 96.65%. This percentage comes from Thunderstruck II being a low variance slot, meaning you get more frequent but smaller wins. On average, you’d get back $/€/£96.65 for every $/€/£100 you stake. You can play from as much as $/€/£15 to as little as 30p per turn. Plus, with approximately one in three spins offering a winning combination, this is an excellent game for those new to slot games.


Thunderstruck II comes with a whole host of new bonus features. Microgaming base each of the eight total bonus features on the mythological characters and include rolling reels, transforming symbols and multipliers. For example, if Odin’s Ravens appear, they will randomly turn symbols into multipliers of x3 or x2, or x6 if they both arise at the same time.

The Great Hall of Spins

Offering a multi-level free spins feature, The Great Hall of Spins provides you with a variety of bonuses. For example, the Loki Free Spins feature gives you 15 free spins and its Wild Magic symbols randomly transforms reels into extra wilds. The Valkyrie Free Spins feature is the first you will unlock, giving you ten free spins with a x5 multiplier.


This bonus is the defining feature of Thunderstruck II. When randomly triggered, the Wildstorm feature means Thor uses his lightning to transform 1 and 5 reels into wild reels. You can win up to 8,100 times your total stake if you manage to get all five wild reels.

Casino77 Verdict

With its medium variance slot and lots of added features, Thunderstruck II offers players the potential to produce big wins. The rolling reels extra, seen in other Microgaming slots, such as Immortal Romance and Avalon, reward multiple consecutive wins. Thunderstruck II has the feel of a classic casino game with the convenience of being online.

If this slot does not strike you, why not try some other titles from Micrograming, including The Bounty, Shamrock Holmes Megaways, Foxpot and Golden Stallion.