
Microgaming · Educational guide
Thunderstruck
A Microgaming slot with norse themes. This entry explains its listed format only; it does not promote play.
- RTP
- 96.10%
- Volatility
- High
Free demo
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The official demo published by Microgaming. It runs on play money only; no real funds are involved.
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What this guide explains
Key concepts to understand
Format: 9 Lines
Volatility: Medium
Theme tags: Norse
Slot information
Theme & game design
One-line verdictThe one that set the template — plain by current standards, and still perfectly composed.
A Microgaming slot with norse themes. This entry explains its listed format only; it does not promote play.
A short story from the game world
A hammer hangs in a grey sky and the clouds arrange themselves around it out of long habit. The original storm; everything after was a sequel.
Thunderstruck is the original of Microgaming's Norse series: a hammer hanging in a grey sky with the clouds arranged around it, laid out over five reels and 9 paylines. By current standards the screen is plain, but the composition is tidy and the line count is small enough to check every result by eye.
The hub lists no named features for it, only the Norse theme. Later Thunderstruck titles moved to ways-based grids, which makes this one the line-based starting point of the family; the demo's paytable shows which special symbols the original actually uses.
The listing gives a release date of 22 March 2012, high volatility, an RTP of 96.10% and bets from 0.09 to 90. No maximum win is published. Those figures describe the game's maths in broad strokes and do not predict how a run of spins will go.
Microgaming effectively wrote the grammar of the online slot, and that depth still shows in every corner of the screen. The silhouette of a single symbol, the order of a paytable, the cue that marks a change of state — nothing here is left half-finished. Almost no other studio carries decades of formats, from classic three-reel machines to 117,649-way Maxways boards, in one library without the design language coming apart. If you are studying how these games are built, this is the most reliable text you can read.
All releases from March 2012 →
- You are comfortable with long quiet stretches — a high volatility label means results are spread wide by design, not that they come more often.
- You want to practise reading a paytable — every payout here traces back to a fixed line or a standard reel set.
- You want to try before reading further — the studio's own demo runs on this page with play money only.
RTP, volatility, maximum win and bet ranges are reference values and can differ by game version or market.
- Microgaming has 146 slots in this catalogue; this guide is one of them.
- Among the 132 Microgaming slots with a single published RTP, 96.1% ranks #75.
- Microgaming released 1 other title in the same month (2012-03).
Same studio, same month (2012-03)Mermaids Millions
More norse myth-themed gamesAsgardian Fire™ · MicrogamingThunderstruck® Stormchaser · MicrogamingThunderstruck II · MicrogamingViking Runecraft 1000 · Play’n GO
Assembled by arithmetic over the catalogue. Ranks order the published figures by size; they are not a quality rating.FAQ
Thunderstruck — frequently asked questions
- What is the RTP of Thunderstruck?
- The studio-published RTP is 96.10%. RTP is a long-run theoretical return, not a per-session result, and some operators run lower-RTP builds.
- How volatile is Thunderstruck?
- The studio lists its volatility as High. Volatility describes how results are spread, not how likely a win is.
- What is the maximum win on Thunderstruck?
- Microgaming does not publish a win cap for Thunderstruck.
- Can I play Thunderstruck for free?
- Yes. The studio's official demo runs on this page with play money only — no sign-up and no real funds.
- When was Thunderstruck released?
- Microgaming lists the release date as 2012-03-22.
Structure match
Closest by published structure
Nearest by format family, volatility, RTP, win cap and theme — computed from published specifications only. A study aid, not a recommendation.



