Sanatorium Secrets
Certified by the HGC (HGC-036657-TM)
Data source: iGaming Tools (16 June 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 Sanatorium Secrets plays
This page is compiled from the provider’s published data and the HGC register. It is not a review: we have not tested Sanatorium Secrets yet, so it has no score.
Sanatorium Secrets is a Pragmatic Play slot with 6 reels and 4 rows. It was released in June 2026. It is themed around horror.
It is certified by the HGC for online play in Greece, certificate HGC-036657-TM; last updated in the register on 28 May 2026.
Sanatorium Secrets combines free spins, multipliers and bonus buy. 76 other slots of the 593 with data in our catalogue have exactly the same combination.
RTP 96.47%: what it means
Sanatorium Secrets has an RTP of 96.47%. If €1,000 were staked in total over a very large number of spins, about €964.70 would theoretically be paid back and €35.30 would stay with the casino. RTP is an average over millions of spins. A single session can end very differently — and in the long run the casino wins.
That is below the median RTP (96.5%) of the 593 slots with data in our catalogue — higher than 40% of them. Across the 507 Pragmatic Play slots we track, the median RTP is 96.5%. Note: 96.47% is the standard version of Sanatorium Secrets. If a casino runs another version, its RTP is shown in the game’s info screen.
Volatility: medium
The provider rates the volatility of Sanatorium Secrets as “medium”. A balance between frequent small wins and rarer bigger ones. The balance swings noticeably, without the extremes of the most volatile games.
Of the other 506 Pragmatic Play slots in our catalogue, 58 share this level with Sanatorium Secrets.
Max win: 10,000×
The top prize on Sanatorium Secrets 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 Sanatorium Secrets in our data source; the minimum and maximum stake are shown in the game’s info screen at the casino.
Bonus features
Free spins
Usually triggered by scatter symbols, they give you spins you are not charged for; their wins are credited to your balance as normal. In Sanatorium Secrets it comes together with multipliers and bonus buy. Found in 489 of the 593 slots with data in our catalogue and in 416 of Pragmatic Play’s 507.
Multipliers
Multiply a win, for example ×2 or ×10. They are already part of the RTP — they do not raise it. In Sanatorium Secrets it comes together with free spins and bonus buy. Found in 299 of the 593 slots with data in our catalogue and in 262 of Pragmatic Play’s 507.
Bonus buy
Lets you buy the bonus round directly, at a cost of many times your stake — often tens or hundreds of times. It raises the amount you play very quickly; whether it is offered depends on the casino. In Sanatorium Secrets it comes together with free spins and multipliers. Found in 450 of the 593 slots with data in our catalogue and in 394 of Pragmatic Play’s 507.
Frequently asked questions
What is the RTP of Sanatorium Secrets?
The RTP of Sanatorium Secrets is 96.47%, according to the provider (Pragmatic Play). That is a house edge of 3.53% over the long run; a single session can differ a lot.
Is Sanatorium Secrets certified in Greece?
Yes. The HGC has certified Sanatorium Secrets for online play, certificate HGC-036657-TM (last updated in the register on 28 May 2026). 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 Sanatorium Secrets?
10,000× the stake, according to the provider. It is a theoretical ceiling that is reached very rarely.
How volatile is Sanatorium Secrets?
“Medium”, according to the provider. A balance between frequent small wins and rarer bigger ones.
What bonus features does Sanatorium Secrets have?
According to the provider: free spins, multipliers and bonus buy.
Can I play Sanatorium Secrets for free?
Yes, in the demo on this page, with play money and only after confirming you are 21+.
Similar slots
Sanatorium Secrets compared
The most closely related slots in our catalogue, by provider, volatility, theme and features:
| Slot | RTP | Volatility | Max win | Grid |
|---|---|---|---|---|
| Sanatorium Secrets | 96.47% | medium | 10,000× | 6×4 |
| Death Dominion | 96.54% | medium | 20,000× | 6×5 |
| Beware The Deep Megaways | 96.52% | high | 10,000× | — |
| Caishen's Cash Pots | 96.49% | medium | 10,000× | 5×4 |
Compared with Death Dominion (Pragmatic Play), Sanatorium Secrets has an RTP 0.07 points lower, the same volatility and half the max win. Both have free spins, multipliers and bonus buy. Only Death Dominion has cascades.
Compared with Beware The Deep Megaways (Pragmatic Play), Sanatorium Secrets has an RTP 0.05 points lower, lower volatility and the same max win. Both have free spins, multipliers and bonus buy. Only Beware The Deep Megaways has cascades and Megaways.
Compared with Caishen's Cash Pots (Pragmatic Play), Sanatorium Secrets has an RTP 0.02 points lower, the same volatility and the same max win. Both have free spins, multipliers and bonus buy.