Thunderstruck II Slot Machine

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Thunderstruck II demo
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Return to player Min bet size Game type Variance Reels Progressive Jackpot
96.65% 0.01 Video Slots Medium 5 No
Popularity Max bet size Game provider Bonus Features Paylines Theme
75 Microgaming Yes 243 Mythology

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Thunderstruck II online slot game

Thunderstruck II is a follow-up to Microgaming’s incredibly popular Thunderstruck casino slot game and features improved graphics and features along with an enhanced story line. It is widely popular among fans of the original Thunderstruck game as well as those who are interested in Norse mythology.

Theme and Story Line

The game is based upon the ancient city of Asgard and Norse god Thor. In Thunderstruck II, there are four main characters: Thor, Odin, Valkyrie, and Loki. These characters can help you win up to four times your bet or unlock up to 25 free spins. 

Graphics, Sounds and Animations

This casino slot comes with symbols that resemble playing cards, as well as a few other ones from the original game such as Thor’s hammer. It features sound effects related to storms such as lightning bolts and thunder. When there is a winning spin, you will see and hear a stack of coins falling. Dramatic theme music plays in the background, adding an element of intensity and suspense to this casino game. 

Thunderstruck II features enhanced animation in the way of dark clouds that move over top of the reels and characters that leap out from the reels while they are spinning. In particular, characters are likely to pop out whenever you encounter the Wildstorm feature.

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To begin playing, choose the number of coins to bet per line. To make the maximum wager, click on the “bet max” button at the bottom of your screen. Hit the “spin” button in the lower right-hand corner of your screen to start the reels spinning. You can also select the auto play feature to automatically spin the wheel five or ten times. After each spin, you can keep track of your credits by checking the box in the lower-left hand corner of the screen. 

Bonuses and Free Spins

The Thunderstruck II symbol serves as a wild symbol, or you may also randomly encounter the Wildstorm feature. When this happens, up to five reels at once can turn wild. This slot is perhaps best known for its Great Hall of Spins, which is accessed whenever you land on three or more Mjolnir or scatter symbols. From there, you can access even more features based upon the character you unlock:

  • Valkyrie-Will award you ten free spins, and multiply your winnings 5x. There is also the possibility of retriggering the free spins feature.
  • Loki-This character opens you up to the Wild Magic feature. When the Wild Magic symbol appears on the third reel, other symbols will randomly be turned into substitutes. Loki will also allow you an additional 15 spins.
  • Odin-Comes with 20 free spins and a Wild Raven feature. The Wild Raven feature will randomly turn certain symbols into 2x or 3x multipliers. Land on two ravens and your winnings will be increased 6x.
  • Thor-Provides you with 25 free spins and a Rolling Reels feature. With Rolling Reels, you have the potential for multiple consecutive wins and a winnings multiplier of up to 5x.

Bet sizes, RTP and Variance

This casino slot will allow you to bet between one and ten coins per line, and achieve a jackpot of up to 6,000 coins. This is generally considered a medium variance slot, so you may experience brief periods of time without a winning spin. However, your winnings will be higher than if you were to experience more frequent wins. Thunderstruck II comes with a Return to Player of 96.65%, which is about average for Microgaming slots


Microgaming has taken what was already a very popular casino slot game and greatly improved on it. By adding new features and ways to win, they have managed to retain fans of their original Thunderstruck game in addition to attracting new ones. However, even with the improvements many gamblers claim that Thunderstruck II still contains rather basic graphics and symbols. At the same time, they are pleased with the improvements Microgaming has made over its original Thunderstruck slot. You’ll find this game available at reputable online casinos such as Gate 777, SlotsMillion, Jackpot City Casino, and CasinoChan.

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