Return to player
96.65%
Minimum bet size
0.01
Slot format
Video Slots
Variance
Medium
Reels
5
Progressive Jackpot
No
Popularity
Maximum bet size
75
Game provider
Microgaming
Bonus Features
Yes
Paylines
243
Theme
Mythology
Thunderstruck II online slot review
In this GCCans review, Evan Carrington describes Thunderstruck II as Microgaming’s follow-up to the highly popular Thunderstruck casino slot. It brings updated graphics, added features and a more developed story line, appealing to fans of the original as well as players drawn to Norse mythology.
Theme and Story Line
The setting draws on Asgard, the ancient city, and the Norse god Thor. Thunderstruck II features four central 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
The reels combine playing-card-style symbols with familiar imagery from the original game, including Thor’s hammer. Storm-themed sound effects bring lightning bolts and thunder into the experience, while a winning spin produces the sight and sound of a stack of coins falling. Dramatic background music adds intensity and suspense to the casino game.
Thunderstruck II also enhances its animation with dark clouds moving over the reels and characters leaping out while the reels spin. These appearances are especially likely when the Wildstorm feature is triggered.
Top Casinos to Play Thunderstruck II:
Gameplay
Begin by selecting the number of coins to wager on each line. The “bet max” button at the bottom of the screen sets the maximum wager, while “spin” in the lower right-hand corner starts the reels. You can instead choose auto play to spin the wheel automatically five or ten times. After each spin, check the box in the lower-left hand corner to follow your credits.
Bonuses and Free Spins
The Thunderstruck II symbol functions as a wild, and the Wildstorm feature may also appear at random. When it does, up to five reels at once can become wild. The slot’s best-known feature is the Great Hall of Spins, reached after landing on three or more Mjolnir or scatter symbols. From there, the character you unlock determines the additional feature:
- Valkyrie—will award you ten free spins and multiply your winnings 5x. The free spins feature may also retrigger.
- Loki—opens the Wild Magic feature. When the Wild Magic symbol appears on the third reel, other symbols are randomly changed into substitutes. Loki also grants an additional 15 spins.
- Odin—comes with 20 free spins and the Wild Raven feature. Wild Raven can randomly turn selected symbols into 2x or 3x multipliers. Land on two ravens and your winnings will be increased 6x.
- Thor—provides 25 free spins and the Rolling Reels feature. Rolling Reels can produce multiple consecutive wins, with a winnings multiplier of up to 5x.
Bet sizes, RTP and Variance
Wagers range from one to ten coins per line, with a potential jackpot of up to 6,000 coins. This is generally considered a medium-variance slot, so short periods without a winning spin may occur. The trade-off described in the review is that winnings may be higher than with more frequent wins. Thunderstruck II has a Return to Player of 96.65%, which is roughly average for Microgaming Slots: Features, RTP and Jackpot Games.
Conclusion
Microgaming substantially develops what was already a popular casino slot, adding features and more ways to win while retaining fans of the original Thunderstruck game and potentially attracting new players. Even with those improvements, many gamblers claim that Thunderstruck II still uses rather basic graphics and symbols. At the same time, they appreciate the changes Microgaming made to its original Thunderstruck slot. The source review listed the game at casinos it described as reputable online casinos, including Gate 777, SlotsMillion, Jackpot City Casino, and CasinoChan.
With 12+ years of experience in the iGaming industry, Evan specializes in reviewing online casinos, analyzing slot games, and evaluating player safety. Their expertise covers casino licensing, RTP, volatility, bonus conditions, and withdrawal policies. Through hands-on testing and independent research, Evan delivers transparent, fact-based reviews to help players better understand gambling platforms, their features, and potential risks.
