Thunderstruck II slot overview
Thunderstruck II is the Norse-gods classic with four progressive free spins modes in its Great Hall of Spins. First released in 2010, it remains a staple at UK online casinos.
How to play Thunderstruck II
Thunderstruck II uses 243 ways to win. Scatter symbols open the Great Hall of Spins.
- Choose your stake – up to the UK maximum of £5 per spin (£2 for players aged 18–24).
- Spin the reels and watch for wilds and scatters.
- Trigger the bonus features for the biggest wins.
Thunderstruck II features and free spins
Great Hall of Spins
Four free spins modes – Valkyrie, Loki, Odin and Thor – unlock as you return to the hall.
Wildstorm
A random feature that can turn up to five reels wild.
243 ways
Wins pay for matching symbols on adjacent reels.
Thunderstruck II RTP and volatility
Thunderstruck II is medium volatility with a published default RTP of 96.65% and a maximum win of 8,000x your stake.
Tips for playing Thunderstruck II
- Thor's free spins mode has rolling reels with multipliers.
- Wildstorm can trigger at any time.
- See all mythology slots.
Thunderstruck II pros and cons
Pros
- Four free spins modes
- Wildstorm feature
- Medium volatility
Cons
- Dated visuals
- Modes must be unlocked
Thunderstruck II vs similar slots
| Slot | Developer | RTP | Volatility | Ways to win |
|---|---|---|---|---|
| Thunderstruck II | Games Global | 96.65% | Medium | 243 ways |
| Gonzo's Quest | NetEnt | 95.97% | Medium | 20 paylines |
| Rainbow Riches | Barcrest | 95.00% | Medium | 20 paylines |
| Fishin' Frenzy | Blueprint Gaming | 96.12% | Medium | 10 paylines |
Gonzo's Quest, Rainbow Riches, Fishin' Frenzy are good alternatives if you enjoy Thunderstruck II.
Thunderstruck II on mobile and in demo mode
Thunderstruck II is fully playable on mobile in casino apps and browsers. You can also try it in demo mode at UK-licensed casinos once you have verified your age.
Our verdict on Thunderstruck II
Thunderstruck II is a medium volatility slot from Games Global with a 96.65% default RTP. Its standout strength is four free spins modes; the main thing to be aware of is dated visuals. It suits longer sessions on a sensible budget.
Where to play Thunderstruck II in the UK
Thunderstruck II is widely available at leading UK casinos. Check the game lobby at your chosen casino, and compare welcome offers below.
See every offer on our casino bonuses page, or browse more video slots.
Frequently asked questions
What is the RTP of Thunderstruck II?
The developer's published default RTP is 96.65%. Check the game's help screen, as casinos can run different versions.
Is Thunderstruck II high volatility?
Thunderstruck II is medium volatility.
What is the max win on Thunderstruck II?
The maximum win is 8,000x your stake.
Can I play Thunderstruck II for free?
Yes, in demo mode at UK-licensed casinos once you have verified that you are 18 or over.
How many free spins modes does Thunderstruck II have?
Four – Valkyrie, Loki, Odin and Thor.