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Thunderstruck II

Mjolnir Awaits: Strike for 8,100x Potential.

If you’ve spent any time at a Canadian online casino, chances are you’ve heard the rumblings of Thor’s hammer. Originally launched by Microgaming in 2010 and later polished to a mirror finish in a 2020 remaster, Thunderstruck II remains a heavyweight in the world of online slots. We’ve done the heavy lifting, checking the stats and mechanics against verified data so you can decide if this Norse trek is for you. Whether you want to play for fun or for real loonies, here is the full breakdown.

Written by: Alex Ivanov
Fact Checked by: Gabriel Bouchard

Game Specs

Provider: Games Global (formerly Microgaming)

Release Date: May 5, 2010

Theme: Norse Mythology

Layout: 5 Reels, 3 Rows

Paylines: 243 Ways to Win

RTP%: 96.65%

Variance: High

Player Suitability: Recommended for experienced players

Minimum Bet: C$0.30/spin

Maximum Win Potential: Up to 8,100x your bet

Technology: HTML5

Minimum OS: iOS 11.0+ / Android 6.0+

Game Size: 25MB

Key Gameplay Features You Should Look Out For

Thunderstruck II isn’t just a standard 5-reeler; it’s a progression-based experience that rewards loyalty. The more you play, the more of Asgard you see.

This random event can occur during any base game spin. Thor strikes the reels, turning up to five of them completely Wild. Landing all five reels as Wilds is the ticket to the game’s top payout.

Triggered by 3+ Mjolnir Scatters. This is a multi-level bonus:

Valkyrie: 10 Free Spins with a 5x multiplier.
Loki (unlocked after 5th trigger): 15 Free Spins with Wild Magic.
Odin (unlocked after 10th trigger): 20 Free Spins with Wild Ravens (up to 6x multiplier).
Thor (unlocked after 15th trigger): 25 Free Spins with Rolling Reels and increasing multipliers.

Top Streategies & Wins Reported by Fans

While slots rely on luck, I discovered that experienced Canucks use these three approaches to make the most of their bankroll:

The “Hall Hunter” Approach: Since the best features (Odin and Thor) are locked behind multiple bonus triggers, start with smaller bets. The game remembers your progress across sessions. Once you’ve unlocked the Thor level, you might consider slightly increasing your stake to capitalize on the Rolling Reels mechanic.
The Valkyrie Multiplier Hold: Many pros prefer the Valkyrie bonus even after unlocking others. The flat 5x multiplier on every win is often more consistent than the random nature of Odin’s ravens or Loki’s Wild Magic.
Bankroll Buffering (always a good and viable strategy): Because this is a high-variance title, dry spells are part of the game. Successful players often budget for at least 100 to 150 spins to ensure they have enough “gas in the tank” to hit a Wildstorm or a Great Hall trigger.

Now, check this guy’s nice $3,430 win he shared on YouTube:

Graphics & Sound

The 2020 remaster breathed new life into this classic, ensuring it doesn’t look like a relic on your smartphone.

The art style is crisp and detailed, featuring stone-carved symbols and cinematic portraits of the gods. The animations when Thor summons lightning or when Mjolnir hits the reels are smooth and pack a punch.

The vibe is epic and heavy. It feels like you’re sitting at a feast in Valhalla. The use of blue and grey tones creates a cool, misty Nordic feel that contrasts perfectly with the gold and lightning flashes of a big win.

Recent News

The Thunderstruck series remains a cornerstone of the Games Global (formerly Microgaming) portfolio. Stormcraft Studios, the creative force behind the modern iterations, has been busy expanding the franchise with fresh mechanics and high-voltage updates.

Thunderstruck Gold Blitz Extreme (Launched Oct 31, 2024): This is the newest heavy hitter in the family. It merges the legendary Norse aesthetics with the popular “Gold Blitz” mechanic. Players can now enjoy 4,096 ways to win, a “Rising Rewards” jackpot feature, and a collection system that triggers high-stakes Blitz spins. It’s a high-volatility beast that has quickly become a favorite for those seeking bigger, modern payouts.

Expansion into Video Bingo: Proving the brand’s versatility, Thunderstruck II Video Bingo (developed by Neko Games) has seen a resurgence in 2024. It adapts the “Great Hall of Spins” into a “Great Hall of Jackpots,” where bingo patterns unlock character-based prizes reaching up to 10,000x your stake.

Stormchaser Continued Success: Thunderstruck Stormchaser, which introduced Multiplier Symbols and the “Wildstorm Unleashed” free spins, continues to receive updates and remains a top-tier choice for mobile players due to its optimized HTML5 performance.

Provider Awards & Recognition: Games Global started 2024 with a massive win at the International Gaming Awards, taking home “Slot Provider of the Year.” They followed this up with a strong showing at the Global Gaming Awards EMEA 2025, where they were recognized as a “Breakthrough Company,” largely due to their ability to modernize classic IPs like Thunderstruck for a new generation of Canadian players.

Final Verdict:

Thunderstruck II is the definitive “hall of fame” slot. It manages to balance nostalgia with rewarding progression in a way few other games can. While newer titles in the series like Gold Blitz Extreme offer more modern flash, the 96.65% RTP and the tiered bonus structure of the original sequel remain the gold standard. It is a high-variance trek that requires a solid bankroll, but the payoff of a five-reel Wildstorm is still one of the most electric moments in gaming.

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