Last updated: 13-06-2026
By the gods, this one's a classic. Thunderstruck II is Microgaming's (now Games Global) Norse-mythology legend — an epic set in Asgard alongside Valkyrie, Loki, Odin and Thor. Released in 2010 and remastered since, it helped define the 243-ways-to-win era and remains a fixture in casino lobbies worldwide. Here's the honest rundown on how it plays at Class 777.
It's a high volatility pokie (Microgaming officially rates it medium) with a solid 96.65% RTP, 243 ways to win, and an 8,000x max win. The centrepiece is the Great Hall of Spins — four god-themed free-spins modes you unlock in sequence — backed by the random Wildstorm feature. Below I'll cover both, how it compares, and how to play it sensibly.
Author's tip from Callum Fraser, Casino Editor & Player Experience Researcher: "Thunderstruck II shares its DNA with Immortal Romance — a random wild-reel feature plus four progressively unlocked free-spins modes. Just like that game, the best modes (Odin and Thor) sit behind many bonus triggers, so reaching them is a long-term goal. The 96.65% RTP is generous, but it still plays high, so keep your stake modest and treat the climb through the gods as the real reward."What is Thunderstruck II and how does the Great Hall work?
Thunderstruck II is a Microgaming / Games Global pokie on a 5-reel, 3-row grid with 243 ways to win. The wild (the game logo) doubles any win it joins (2x); Thor's Hammer is the scatter. The marquee feature is the Great Hall of Spins: four free-spins modes, each tied to a god and unlocked in order as you keep triggering the bonus.
- Studio: Microgaming (now Games Global) — released 2010, remastered in HTML5.
- Grid: 5 reels, 3 rows, 243 ways to win.
- RTP: 96.65% standard — operator-configurable, so check the info screen at Class 777.
- Volatility: High (officially rated medium).
- Max win: 8,000x your stake.
- Wild: doubles any win it contributes to.
- Wildstorm: random feature turning up to 5 reels wild (with 1 free spin).
- Bet range: roughly $0.30 to $15 a spin.
Here's the four-god line-up, each unlocking at a milestone:
Four distinct gods give Thunderstruck II real long-term pull — each mode plays differently, and unlocking Thor is a proper milestone. For another god-themed thriller, the Greek-flavoured Zeus vs Hades is a cracking modern take.
What is the Wildstorm feature — and how does it compare?
The base game's wildcard is Wildstorm — lightning that can strike at any moment, completely at random, turning up to five reels wild and awarding a free spin. Catch all five wild and the 8,000x top win is in reach. Here's the idea:
Wildstorm keeps the base game charged with possibility — a screen of wild reels can land out of nowhere. Here's how Thunderstruck II sits next to a couple of other heavyweight slots at Class 777:
| Metric | Thunderstruck II | Immortal Romance | Zeus vs Hades | Notes |
|---|---|---|---|---|
| Studio | Microgaming | Microgaming | Pragmatic Play | All god-themed |
| RTP (standard) | 96.65% | 96.86% | 96.07% | All operator-configurable |
| Volatility | High | High | High–very high | All swing hard |
| Max win | 8,000x | 12,150x | 15,000x | Zeus tops these |
New to terms like volatility, RTP or 243 ways to win? The glossary lays them out in plain English.
Author's tip from Callum Fraser, Casino Editor & Player Experience Researcher: "Like its sibling, the original Thunderstruck II has no bonus buy — the slow unlock of the four gods is the whole point, and a buy would undercut it. That means you need to put in the spins to reach Odin and Thor, so budget for play across multiple sessions rather than trying to force it. The progression is a long game; let it unfold and don't overreach to get there faster."How do you start playing Thunderstruck II at Class 777?
A couple of minutes and Asgard awaits:
- Open the Class 777 registration page and create your account with ID-matching details.
- Make a deposit — AUD methods like card, PayID and e-wallets usually clear in seconds.
- Grab a welcome bonus if it suits, and read the wagering terms first.
- Open Thunderstruck II, confirm the RTP on the info screen, and set a comfortable bet.
- Spin for the Hammer scatters to enter the Great Hall — and watch for Wildstorm.
- Set a deposit limit and a session timer in account settings first. 18+ only.
Every result runs on a certified random number generator — no strategy changes the odds. Sign up at Class 777 and you're ready to roll.
Who is Thunderstruck II best for — and how do you play it responsibly?
Thunderstruck II is a great pick for players who love mythology, deep bonus systems and a long-term progression to unlock. Prefer the same engine with a vampire story? Immortal Romance is its sibling; for something gentler, 9 Masks of Fire is medium-vol; and the Microgaming jackpot giant Mega Moolah awaits.
More to explore at Class 777: for god-themed tumbles there's Gates of Olympus and Gates of Olympus 1000; for more multiplier action, Sweet Bonanza; and other favourites include Book of Dead, Razor Shark, Wolf Gold, The Dog House, Big Bass Bonanza and Starburst.
Whatever you choose, keep it in check. Pokies are entertainment, not income — the house edge never goes away, and a high-vol game can run cold for a long stretch. Set a budget you're genuinely fine to lose, use the deposit limits and reality checks at Class 777, and never chase a loss. If the fun stops, free confidential support is available through Gambling Help Online (1800 858 858), and BetStop, the national self-exclusion register, can block you from all licensed Australian operators at once. 18+ only.
Played within budget, Thunderstruck II is a majestic, feature-rich legend that still holds its own — just enjoy the saga for the fun, not the rent. Check the latest bonus at Class 777 and storm Asgard on your own terms.
Author's tip from Callum Fraser, Casino Editor & Player Experience Researcher: "Set your loss limit before the first spin. I put a deposit cap into the account settings at Class 777 the day I sign up — thirty seconds, and it keeps a long-progression game from quietly costing more than I planned while I climb toward Thor across sessions. Thunderstruck II is best enjoyed patiently and on a budget; the limit keeps the saga fun."
