Thunderstruck II Slot Review: Norse Mythology & Great Hall of Spins
Thunderstruck II, launched by Microgaming in 2010, is widely considered one of the greatest Norse mythology slot games ever produced. Serving as the direct sequel to the iconic original, this 243-ways-to-win title invites Canadian players into Asgard alongside Thor, Odin, Loki, and Valkyrie. With its multi-tiered Great Hall of Spins, random Wildstorm feature, and remastered high-definition graphics, Thunderstruck II continues to captivate players from coast to coast across Canada.
Key Game Specifications
- Developer: Games Global / Microgaming
- RTP (Return to Player): 96.65%
- Volatility: Medium
- Maximum Win: 8,000x total stake
- Paylines: 243 Ways to Win
- Layout: 5 reels, 3 rows
- Bet Range: $0.30 to $15.00 CAD per spin
Theme, Visuals, and Audio
The reels are etched onto heavy Norse stone slabs encased in steel borders, floating against a mystical starry Nordic sky. Symbols showcase Asgardian mythology: Thor holding his mighty hammer Mjolnir, wise Odin with his ravens, trickster Loki with a sly grin, blonde shieldmaiden Valkyrie, Thor’s Viking longship, and the golden rainbow bridge of Asgard. The epic orchestral soundtrack features thunderous percussion and dramatic brass fanfares that celebrate divine wins.
Core Mechanics and Wildstorm Feature
Thunderstruck II uses 243 ways to win, meaning any sequence of matching icons on adjacent reels from left to right yields a payout. The Thunderstruck II logo is Wild, substituting for all standard symbols and doubling payouts whenever it participates in a winning combo. At any moment in regular play, Thor can summon the Wildstorm feature at random, transforming anywhere from 1 to all 5 reels entirely into Wilds, capable of awarding up to a massive 8,000x stake payout.
The Great Hall of Spins: Mythological Bonus Rounds
Landing 3, 4, or 5 Thor’s Hammer (Mjolnir) scatters unlocks entrance into the Great Hall of Spins. Progressive entries unlock increasingly powerful godly bonus rounds:
- Valkyrie (1st trigger): Awards 10 free spins with an active 5x multiplier applied to all wins. Retriggers are fully supported.
- Loki (5th trigger): Awards 15 free spins with the Wild Magic feature. Landing the Wild Magic symbol on reel 3 randomly transforms other symbols into extra wilds.
- Odin (10th trigger): Awards 20 free spins with the Wild Raven feature. Odin’s ravens randomly fly across the screen to turn symbols into 2x and 3x multipliers, combining for up to 6x wins.
- Thor (15th trigger): Awards 25 free spins featuring Rolling Reels. Consecutive cascades boost the multiplier incrementally to 2x, 3x, 4x, and up to 5x.
Volatility and Player Return
Operating with medium volatility and a generous 96.65% RTP, Thunderstruck II provides a smooth, balanced gaming experience. The hit frequency is comfortable, generating consistent payouts that sustain player bankrolls while progressing through the Great Hall of Spins. The unlocking mechanism saves player progress across gaming sessions at the same casino, rewarding long-term loyalty.
Summary for Canadian Players
Thunderstruck II remains a crown jewel of Canadian online casinos. Its enduring combination of rich Norse mythology, progressive bonus unlocking, and iconic audio-visual design makes it timeless. Whether playing casually on mobile or exploring the depths of the Great Hall of Spins on desktop, Thunderstruck II delivers satisfying, mythic entertainment.



