Hammerstorm
Certified by the HGC (HGC-033879-TM)
Data source: iGaming Tools (22 July 2026)
Free play · rotates to fullscreen
Demos are only available to people aged 21 and over.
Demo provided by the game studio via iGaming Tools. Free play only, no real money.
How it playsHow Hammerstorm plays
This page is compiled from the provider’s published data and the HGC register. It is not a review: we have not tested Hammerstorm yet, so it has no score.
Hammerstorm is a Pragmatic Play slot with 5 reels and 3 rows and 40 paylines. It was released in December 2025. It is themed around Norse mythology.
It is certified by the HGC for online play in Greece, certificate HGC-033879-TM; last updated in the register on 19 December 2025.
The only special feature the provider lists for Hammerstorm is multipliers.
RTP 96.5%: what it means
Hammerstorm has an RTP of 96.5%. If €1,000 were staked in total over a very large number of spins, about €965 would theoretically be paid back and €35 would stay with the casino. It is not a forecast for one session: over a few spins everything is chance, and over time the edge stays with the casino.
That equals the median RTP (96.5%) of the 593 slots with data in our catalogue. Across the 507 Pragmatic Play slots we track, the median RTP is 96.5%. Note: 96.5% is the standard version of Hammerstorm. If a casino runs another version, its RTP is shown in the game’s info screen.
Volatility: high
The provider rates the volatility of Hammerstorm as “high”. Wins are rarer and concentrated in the bonus rounds. Long losing stretches are expected, so a balance can run out quickly.
Of the other 506 Pragmatic Play slots in our catalogue, 434 share this level with Hammerstorm.
Max win: 10,000×
The top prize on Hammerstorm is 10,000× the stake, i.e. €10,000 at a €1 stake. It is a ceiling reached extremely rarely — not a win anyone should expect. That is above the median (7,500×) of the 544 slots in our catalogue that publish a max win; 104 are higher.
Bet range
The provider does not publish a bet range for Hammerstorm in our data source; the minimum and maximum stake are shown in the game’s info screen at the casino.
Bonus features
Multipliers
A win is multiplied by a factor (for example ×2 or ×10). Their contribution is already included in the RTP. It is the only special feature the provider lists for Hammerstorm. Found in 299 of the 593 slots with data in our catalogue and in 262 of Pragmatic Play’s 507.
Frequently asked questions
What is the RTP of Hammerstorm?
The RTP of Hammerstorm is 96.5%, according to the provider (Pragmatic Play). That is a house edge of 3.5% over the long run; a single session can differ a lot.
Is Hammerstorm certified in Greece?
Yes. The HGC has certified Hammerstorm for online play, certificate HGC-033879-TM (last updated in the register on 19 December 2025). You can check it with the “Is this slot certified in Greece?” search on frut.gr or in the HGC’s public register.
What is the max win on Hammerstorm?
10,000× the stake, according to the provider. It is a theoretical ceiling that is reached very rarely.
How volatile is Hammerstorm?
“High”, according to the provider. Wins are rarer and concentrated in the bonus rounds.
What bonus features does Hammerstorm have?
According to the provider: multipliers.
Can I play Hammerstorm for free?
Yes, in the demo on this page, with play money and only after confirming you are 21+.
Similar slots
Hammerstorm compared
The most closely related slots in our catalogue, by provider, volatility, theme and features:
| Slot | RTP | Volatility | Max win | Grid |
|---|---|---|---|---|
| Hammerstorm | 96.5% | high | 10,000× | 5×3 |
| Pub Kings | 96.08% | high | 5,000× | 5×4 |
| Book of Vikings | 96.5% | high | 5,500× | 5×3 |
| Might of Freya Megaways | 96.5% | high | 8,000× | — |
Compared with Pub Kings (Pragmatic Play), Hammerstorm has an RTP 0.42 points higher, the same volatility and double the max win. Both have multipliers. Only Pub Kings has free spins and bonus buy.
Compared with Book of Vikings (Pragmatic Play), Hammerstorm has the same RTP, the same volatility and a max win 1.8 times higher. Only Book of Vikings has free spins and bonus buy. Only Hammerstorm has multipliers.
Compared with Might of Freya Megaways (Pragmatic Play), Hammerstorm has the same RTP, the same volatility and a max win 1.3 times higher. Only Might of Freya Megaways has free spins, cascades, Megaways, sticky wilds and bonus buy. Only Hammerstorm has multipliers.