Thunderstruck II is a Norse mythology slot first released by Microgaming in 2010 and now part of Games Global. It uses 243 ways to win and features the Great Hall of Spins, where four gods offer different free spins rounds that unlock as you trigger the bonus more often. A random Wildstorm in the base game can turn whole reels wild. It suits players who like progression systems and steady, mid range volatility.
How does Thunderstruck II work?
The game has five reels and three rows with 243 ways to win. Matching symbols on adjacent reels from the left pay, in any row. Thor, Odin, Loki and Valkyrie are the top paying symbols, and the Thunderstruck II logo is the wild, which doubles wins it helps form.
In the base game, the Wildstorm feature can trigger at random. Lightning strikes the reels and turns up to five of them fully wild. Five wild reels produce the maximum win of 8,000x.
Thor's hammer is the scatter, and three or more open the Great Hall of Spins.
What are the Thunderstruck II bonus features?
The Great Hall of Spins has four levels. Valkyrie is available on the first trigger and gives 10 free spins with a 5x multiplier. Loki unlocks on the fifth trigger with 15 free spins and Wild Magic symbols that add extra wilds. Odin unlocks on the tenth trigger with 20 free spins, where raven symbols add 2x or 3x multipliers, or 6x together.
Thor unlocks on the fifteenth trigger with 25 free spins and Rolling Reels, where each consecutive win raises the multiplier from 2x up to 5x. Once a level is unlocked, you can choose it on later triggers.
Is Thunderstruck II worth playing? RTP and volatility explained
The main RTP is 96.65%, slightly above average, and OLBG notes that a 94.13% version is common at many UK sites. Because the provider offers both settings, check the paytable before you play.
Volatility ratings differ. OLBG and another review call it medium, with a hit rate of about 32%, while SlotCatalog lists it as high. The 8,000x top win comes from the Wildstorm or Loki's free spins, and it is rare. Expect frequent small wins with occasional larger bonus results.
Tips before you play Thunderstruck II
- Check whether your casino uses the 96.65% or 94.13% version.
- Stay at one casino if you want to keep your Great Hall progress.
- Valkyrie's 5x multiplier is a reliable early option; Loki has the highest top end.
- Try the demo to learn the four modes before deciding which to pick on each trigger.
- Remember that Thor's mode needs fifteen triggers, so the later levels take a long time to reach on a normal budget.