18+ only. Gambling involves risk. Never gamble with money you cannot afford to lose.

Thunderstruck II Slot Review

A. Antonova
Since 2017, Anisia has been sharing her iGaming expertise with readers of CasinoGamesPro.com. Her work covers comprehensive reviews of casino favourites like slots, roulette, blackjack, and video poker, along with thorough assessments of payment options, mobile casino platforms, and leading online casinos.
(editor) | Updated:
18+ Only. Play Responsibly.
Get 350% up to $3500 Bonus
Cherry Gold Welcome Bonus

Our Thunderstruck II slot review explains why Microgaming’s 2010 release remains a familiar title in casino lobbies. Featuring 243 ways to win, a 96.65% RTP, medium-high volatility, and payouts of up to 8,100× the stake, this Norse mythology sequel combines straightforward 5-reel gameplay with four escalating free-spin rounds and a random Wildstorm feature that can turn up to five reels wild. Thunderstruck II is available on desktop, tablet, and mobile devices.

Thunderstruck II Pros and Cons

  • Pros
    • Four-level Great Hall of Spins with escalating modifiers
    • Random Wildstorm feature can turn up to five reels wild
    • 243 ways to win and a balanced hit frequency
    • High maximum win of 8,100× the stake
    • Low minimum bet and full mobile compatibility
  • Cons
    • No progressive jackpot
    • Bonus levels must be unlocked over time
    • Visuals show their age compared with modern releases

Thunderstruck II Data Table

Slot Summary
Game TypeVideo Slot
DeveloperMicrogaming (Games Global)
ThemeNorse Mythology
Release DateMay 2010
Layout5 Reels, 3 Rows, 243 Ways
RTP96.65%
VolatilityMedium-High
Minimum Bet$0.30
Maximum Bet$15.00
Max Payout8,100× bet
Hit Frequency Rate31.56%
Paylines243 Ways
Free SpinsYes
FeaturesWilds, Scatters, Great Hall of Spins, Multipliers, Wildstorm
Jackpot TypeFixed (non-progressive)

Thunderstruck II Theme & Symbols

Thunderstruck II slot transports players to Asgard, where Thor, Odin, Loki, and Valkyrie appear across the reels amid flashes of lightning. The icy blue palette, Nordic runes, and carved metal borders reinforce the mythological setting. The special symbols include the Thunderstruck II logo Wild and Thor’s Hammer Scatter, which unlock the game’s signature bonus features and lead players into the Great Hall of Spins.

Visuals & Audio

The sequel updates its predecessor with high-definition artwork, fluid animations, and a rousing orchestral soundtrack. Storm clouds roll behind the reels, lightning flashes during winning spins, and cymbals crash during Wildstorm events. Each deity is clearly illustrated, while subtle ambient effects, including whispering winds and distant thunder, add atmosphere without overwhelming the gameplay.

Symbols

Low-paying symbols: Rune-styled 9, 10, J, Q, K, and A icons deliver frequent but smaller wins.

High-paying symbols:

  • Valkyrie, a winged guardian maiden
  • Loki, the silver-tongued trickster god
  • Odin, the all-seeing All-Father with ravens
  • Thor, the god of thunder with Mjölnir
  • The Viking Longship and shining halls of Asgard provide medium-to-high rewards, while the Thunderstruck II logo is the Wild and Thor’s Hammer is the Scatter.

Thunderstruck II Payout Table

Symbol
Logo Wild2.25×6.00×30.00×
Thor0.90×3.00×15.00×
Odin0.90×3.00×13.50×
Loki0.60×2.40×12.00×
Valkyrie0.60×2.40×10.50×
Asgard0.45×1.80×9.00×
Longship0.45×1.80×7.50×
A0.30×0.60×4.50×
K0.30×0.60×4.50×
Q0.21×0.45×3.75×
J0.21×0.45×3.75×
100.15×0.30×3.00×
90.15×0.30×3.00×
Scatter (Hammer)0.90×1.80×18.00×180.00×

How to Play Thunderstruck II Slot

Play Thunderstruck II slot by selecting a stake between $0.30 and $15, then pressing Spin or Autoplay to set the 5×3 reels and 243 ways in motion. The Thunderstruck II logo substitutes for all symbols except the Hammer Scatter and doubles any win it completes. Landing three or more Scatters unlocks the Great Hall of Spins, where Valkyrie, Loki, Odin, and Thor award escalating free-spin rounds with additional multipliers, wild reels, or rolling reels. The Wildstorm feature can activate randomly in the base game, turning up to five reels entirely wild. Quick Spin, Autoplay, and a detailed paytable are accessible from the control bar on desktop and mobile devices.

Tips & Strategies for Thunderstruck II

  • Manage your stake: Lower stakes allow more spins within the same budget, providing more opportunities to trigger the Great Hall of Spins.
  • Plan for the volatility: Medium-high volatility can produce dry spells, so choose a suitable budget and stake before playing.
  • Learn the free-spin ladder: Odin’s rolling reels and Thor’s 5× multiplier provide the strongest modifiers, but the earlier Valkyrie and Loki rounds must be unlocked first.
  • Use Autoplay wisely: Set loss and win limits to control spending while using the feature.
  • Check the casino RTP: Some sites may offer lower-RTP versions, so look for the 96.65% version.

Thunderstruck II Review Verdict

Thunderstruck II slot remains a classic game with 243 ways to win, four unlockable bonuses, and wild-reel features. Its balanced gameplay, 8,100× maximum win, and compatibility with desktop and mobile devices continue to make it appealing to players who enjoy feature-rich slots.

FAQ

What is the RTP of Thunderstruck II?
The game’s standard RTP is 96.65%, with medium-high volatility.
How do I unlock all four Great Hall of Spins levels?
Each time you trigger the free-spin feature, your progress is saved. The 5th, 10th, and 15th triggers unlock Loki, Odin, and Thor, respectively.
What is the maximum win in Thunderstruck II?
The biggest possible payout is 8,100× your total stake, achievable during the Wildstorm feature or Thor free spins.
Can I play Thunderstruck II on mobile?
Yes. The HTML5 version runs on iOS, Android, and Windows devices without requiring an additional software download.
Is there a progressive jackpot?
No. Thunderstruck II does not have a progressive jackpot. Its larger payouts come from the free-spin rounds and Wildstorm feature.
»