Thunderstruck II Slot: RTP, Volatility and Features
Thunderstruck II is a highly popular online slot developed by Microgaming, themed around Norse mythology and featuring iconic gods like Thor, Odin, Loki, and Valkyrie. The game offers five reels and 243 ways to win, combined with immersive graphics and a powerful soundtrack. Stand-out features include the Great Hall of Spins free-spins rounds and the Wildstorm feature, which can turn up to five reels wild for exciting big-win potential.
Thunderstruck II RTP Variables and Volatility
Thunderstruck II has a fixed RTP of 96.65 % and is classified as a medium-volatility slot. Volatility measures risk level—high volatility means less frequent but larger wins, while low volatility means more frequent but smaller wins. RTP (Return to Player) indicates the average percentage returned to players over time; higher-RTP slots are generally preferred for better long-term returns.
- Available RTP: 96.65 %
- Volatility: Medium
Note: Some casinos can deploy different RTP settings. Always check a site’s game info screen. (Example: Gonzo’s Quest runs at 95.97 % RTP on Swiper Casino but only 90.7 % on William Hill.) For more details read our guide on RTP variables.
Thunderstruck II Features
Thunderstruck II blends classic slot gameplay with bonus mechanics that boost win potential. The marquee attractions are the four-level Great Hall of Spins and the randomly triggered Wildstorm, which can blanket reels with wilds. Together they provide variety and excitement for new and seasoned players alike.
Great Hall of Spins
Triggered by three or more Thor’s Hammer scatter symbols, the Great Hall of Spins unlocks four free-spins modes:
- Valkyrie: 10 free spins, all wins ×5.
- Loki: 15 free spins with Wild Magic extra-wild additions.
- Odin: 20 free spins with Wild Raven multipliers (×2 or ×3).
- Thor: 25 free spins using Rolling Reels and progressive multipliers up to ×5.
New modes unlock sequentially as you retrigger the feature, adding depth and long-term goals to the gameplay.
Wildstorm Feature
The Wildstorm can strike at random in the base game, turning one to five entire reels wild and creating huge win potential across all 243 ways.
Wild Symbol
The Thunderstruck II logo is the wild. It substitutes for all symbols except the scatter and doubles any win it completes. Five wilds on an adjacent-reel combination pay 1,000 × the stake.
Thunderstruck II Reels, Rows, and Paylines
Thunderstruck II uses a 5 × 3 layout with 243 ways to win.
| Reels | Rows | Ways to Win |
|---|---|---|
| 5 | 3 | 243 |
Thunderstruck II Symbols, Wilds and Scatters
High-paying symbols include Thor, Odin, Loki, Valkyrie, and a longship. Low-pays are card ranks 9-A. The Thunderstruck II logo is the wild; Thor’s Hammer serves as the scatter that unlocks free spins.
| Wilds | Scatters | High-Paying Symbols |
|---|---|---|
| Yes (logo) | Thor’s Hammer | Thor, Odin, Loki, Valkyrie, Ship |
Thunderstruck II Compared to Similar Slots
| Slot Name | Max Win | RTP | Main Feature(s) |
|---|---|---|---|
| Thunderstruck II | 8,000 × stake | 96.65 % | Great Hall of Spins, Wildstorm |
| Hall of Gods | Progressive | 95.5 % | Progressive jackpots, free spins |
| Age of the Gods | Progressive | 95.0 % | Multiple jackpots, bonus rounds |
| Immortal Romance | 12,000 × stake | 96.86 % | Wilds, multipliers, free spins |
| Vikings Go Berzerk | 5,000 × stake | 96.1 % | Rage feature, free spins |
Summary
Thunderstruck II is a medium-volatility slot with a strong 96.65 % RTP, 5 reels, and 243 ways to win. Highlights include the Great Hall of Spins (four unique free-spin modes), the random Wildstorm reel-wild feature, and a wild symbol that doubles wins. Coupled with its richly rendered Norse mythology theme, Thunderstruck II remains a classic for players seeking solid entertainment and big-win capability.
Thunderstruck II FAQs
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Chris Vaughan is a Senior Writer and Editor at GamblingAuthority. He has more than 18 years of experience in the iGaming industry and has great knowledge of game developers, trending games and casino research.
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