Sanatorium Secrets – What Is This Slot?
Sanatorium Secrets is a horror-themed video slot by Pragmatic Play that was released on 1 June 2026. It features a 6×4 gaming layout with 4,096 ways to win, with each winning combination paying from left to right on adjacent reels, starting from the leftmost reel. Four high-paying character symbols of the Sanatorium Secrets slot pay out for 2-of-a-kind combinations on the reels. These characters include the Dark Woman, the Dark Man, the Maniac and the Phantom. Additionally, there are six low-paying card symbols that pay for 2-of-a-kind combinations. These include the 10, the 9, the Ace, the King, the Queen and the Jack.
The two sizes of the Wild symbol in the slot are the 1×4 Wild and the 2×4 Wild. The 1×4 Wild expands to fill an entire reel on reels 2 to 5, paying out with a multiplier of up to 8× for any wins it makes. The 2×4 Wild spans reels 3 and 4, filling all the positions on each of these two reels and pays out with a multiplier of up to 64×. Should there be more than one Wild that contributes to the same winning combination, the multipliers will be combined.
The Hook symbol is only visible on reels 1 and 6. If the reel lands a Hook symbol, it will scan the row of the reel for any high-paying character symbols. These will be transformed into 1×1 Wild symbols, which contribute to win combinations on the 4,096 ways to win in the game.
Landing three or more Scatter symbols on reels 2 to 5 will trigger the puzzle respin bonus for Sanatorium Secrets, which occurs before the player enters the Free Spins round. During the puzzle round, the minimum Wild multiplier for the Free Spins round will be set, any Hooks will be activated and the player may earn additional spins. Should the player complete the puzzle, they will have unlocked the maximum win for that round of Free Spins. After the puzzle bonus round, the player will enter the Free Spins round, which comes with a minimum of six spins.
How to Play Sanatorium Secrets
- Select your bet using the + and − buttons. The minimum total bet to play the game is $0.20, and the maximum is $240 per spin. Additionally, placing an Ante Bet of 2× the standard bet will increase the frequency with which the Scatter symbols land on the reels.
- Click the Spin button to begin the game. The symbols will pay out for any winning combinations that are scanned from left to right on each of the adjacent reels, starting from the leftmost reel. Any winning combinations will pay out with the Wild symbol replacing all the symbols on that spin (except Scatter and Hook symbols).
- Keep an eye out for the 1×4 Wild symbol that will expand to take up the entire playing area of reels 2 to 5. This Wild will pay out winnings with a multiplier of up to 8× for any wins it creates. Additionally, keep an eye out for the 2×4 Wild that spans reels 3 and 4, paying out winnings with a multiplier of up to 64×. Should the player score wins that contain more than one Wild, the multipliers will be combined.
- Keep an eye out for the Hook symbol on reels 1 and 6. If any of these reels land the Hook symbol, it will scan its row for any high-paying character symbols. These will be transformed into 1×1 Wild symbols, which may lead to the player winning more combinations on the 4,096 ways to win in the game.
- To activate the puzzle bonus and proceed to the Free Spins round, the player must land three or more Scatter symbols on reels 2 to 5. This bonus round takes place prior to the player entering the Free Spins round.
- During the puzzle bonus round, the player is rewarded with the minimum Wild multiplier for the Free Spins round, the activation of any Hook symbols and a chance of winning additional Free Spins. Completing the puzzle during this bonus round will reward the player with the maximum win that can be won during their Free Spins round.
- Following the completion of the puzzle bonus round, the player will enter the Free Spins round, which comes with a minimum of six spins. Additionally, any winnings from the Wild symbols, any activated Hook symbols and any Free Spins won during the bonus round will also be earned during the Free Spins round.
- Use the Bonus Buy buttons to buy the Free Spins round directly, bypassing the need to spin the reels in the base game to earn the spins. The player can buy 75× and 150× the total bet to gain access to the Free Spins round.
Bonus Features
1×4 Multiplier Wild
The 1×4 Wild is a tall Wild symbol that will expand to take up the entire playing area of any reel from 2 to 5. It will substitute for all other symbols for that particular spin and will pay out winnings with a multiplier of up to 8×. Should the spin include another Wild symbol, the two multipliers will be combined to create one high-value payout.
2×4 Multiplier Wild
The 2×4 Wild is the largest Wild in the game and spans reels 3 and 4. On each spin, the Wild will take up all of the positions on each of these two reels. It will pay out winnings with a multiplier of up to 64×. Additionally, during this round, all of the spins will contain this Wild, greatly increasing the player's potential wins.
Hook Symbols
The Hook symbol will be featured on reels 1 and 6. When any of these reels land the Hook symbol, it will scan its row of symbols for any high-paying character symbols. These will be replaced with a 1×1 Wild symbol. This may help the player win more combinations during their game.
Puzzle Respin Bonus
The puzzle bonus round is triggered by landing three or more Scatters on reels 2 to 5. This bonus round takes place before the player enters the Free Spins round. During this round, the minimum Wild value for Free Spins is set, any Hooks are activated and the player can win additional Free Spins. Completing the puzzle during this bonus round will lead to the player winning the maximum prize during their Free Spins round.
Free Spins – Puzzle Bonus, Wild Multipliers & Hooks
The player will trigger the Free Spins round if they land three or more Scatter symbols on reels 2 to 5 during the base game of the slot. Before the player enters the Free Spins round, they will play through the puzzle bonus round.
During the puzzle bonus round, the player will earn the minimum value of the Wild symbols that will be featured during the Free Spins round, any Hooks will be activated and the player can win additional Free Spins. Any prize payouts during this round will lead to the player earning the maximum prize during the Free Spins round.
| Trigger | Free Spins Awarded | Puzzle Bonus |
|---|---|---|
| 3 Scatters on reels 2–5 | 6+ Free Spins | Puzzle respin sets min. Wild multiplier + Hook activation + optional extra spins |
| 4 Scatters on reels 2–5 | 6+ Free Spins | Puzzle respin with more pieces revealed |
| 5 Scatters on reels 2–5 | 6+ Free Spins | Puzzle respin with maximum pieces revealed |
During the Free Spins round, the 1×4 and 2×4 Wild symbols will pay out for any wins the player scores during the feature. Additionally, any minimum multiplier of the Wild symbols will be preserved from the puzzle bonus round. Any Hooks that were activated during the bonus round will remain active and contribute to any wins during the Free Spins round.
Bonus Buy Options
There are two Bonus Buy options for the player to purchase entry into the Free Spins round. Each of the options will cost 75× or 150× the player's total bet.
| Buy Option | Cost | What You Get |
|---|---|---|
| Bonus Buy | 75× total bet | Direct entry to the Free Spins feature (standard conditions) |
| Bonus Buy (Enhanced) | 150× total bet | Direct entry to the Free Spins feature with improved starting conditions |
Paytable (at $1 total bet)
All of the game's symbols pay out for winning combinations from left to right, only on adjacent reels and starting from the leftmost reel. There are 4,096 ways to win in total.
| Symbol | 2-of-a-kind | 3-of-a-kind | 4-of-a-kind | 5-of-a-kind | 6-of-a-kind |
|---|---|---|---|---|---|
| 👩 Dark Woman (highest) | $0.30 | $1.00 | $2.50 | $5.00 | $10.00 |
| 👱 Blonde Woman | — | $0.40 | $0.70 | $2.50 | $5.00 |
| 👴 Old Man | — | $0.30 | $0.60 | $1.50 | $2.50 |
| 🧑 Man in Green | — | $0.30 | $0.50 | $1.20 | $1.50 |
| A | — | $0.20 | $0.40 | $1.00 | $1.20 |
| K | — | $0.20 | $0.40 | $1.00 | $1.20 |
| Q | — | $0.20 | $0.30 | $0.60 | $0.80 |
| J | — | $0.10 | $0.30 | $0.60 | $0.80 |
| 10 | — | $0.10 | $0.20 | $0.40 | $0.50 |
| 9 | — | $0.10 | $0.20 | $0.40 | $0.50 |
ℹ️ Note: The Wild symbol will substitute for all of the other symbols on any spin except for Scatter and Hook symbols. The highest paying of the symbols is the Dark Woman, which pays out for any 2-of-a-kind combination of these symbols. Additionally, the multipliers of the Wild symbols will be paid out on top of all of the winnings of the symbols.
RTP & Variance Explained
The game features a standard RTP of 96.47%. This is the average of all the prizes that a player will win during the game. This is close to the average RTP of the studio Pragmatic Play. Most of the slots published by the studio have an RTP between 95% and 97%. However, some online casinos may feature a reduced version of the game with an RTP of 95.47% or 94.49%.
The volatility setting of the slot is medium. This means that players can expect a mix of wins of different values during the game. The volatility is also higher during the Free Spins round, when the 2×4 Wild symbol with the 64× multiplier and the Hook symbols can help the player win a large amount of winnings across the 4,096 ways to win. Additionally, the maximum win is 10,000× of the total bet of the player.
| Bet Mode | RTP |
|---|---|
| Normal play | 96.47% |
| Ante Bet (2×) | 96.47% |
| Bonus Buy (75×) | ~96.47% |
| Bonus Buy Enhanced (150×) | ~96.47% |
| Reduced (certain regions) | 95.47% / 94.49% |
Our Verdict
✅ Pros
- Two distinct Wild sizes offer players both the chance of winning prizes with 8× or 64× multipliers
- The Hook symbols offer an additional chance of winning prizes on every spin of the reels
- The puzzle bonus round is a critical phase of the game, as the outcome of this round will determine the conditions in which the player enters the Free Spins round
- The goal of the player is to complete the puzzle to win the maximum prize
- The RTP of 96.47% is competitive for a slot game with medium volatility and numerous ways to win
- The Ante Bet, which costs 2× of the player's total bet, is one of the cheapest ways to increase the chances of landing Scatter symbols
- The free play or demo version of the slot is available here, without the player having to register or make a deposit
❌ Cons
- The maximum winning prize of 10,000× is relatively low considering that the 2×4 Wild symbol can award prizes with a 64× multiplier; therefore, some players may find the maximum prize to be too low
- The volatility of the slot includes a bonus round that is played before the Free Spins round, meaning the outcome of the player's bonus round can impact the variance that they experience during the feature
- The slot does not feature a Feature Buy option; instead, there are two Bonus Buy options
- The low paying values of the 10 and 9 symbols mean that players will win small prizes if these symbols appear on a winning combination
Sanatorium Secrets FAQ
The RTP of the slot is 96.47%. The standard RTP of Pragmatic Play is close to this percentage. However, a reduced version of the game is offered at some online casinos, with an RTP of 95.47% or 94.49%. The percentage can be viewed on the game's website prior to playing for real money.
Yes, the free demo of Sanatorium Secrets is available on this page. To play the demo version of the slot, the player does not have to register with a gambling website or make a deposit. All features of the slot are active in the free play mode.
The maximum winning prize in the game is 10,000× of the player's total bet. This prize can be earned during the Free Spins round, when the 2×4 Wild symbol is active with its 64× multiplier, the player's Hooks are active and the other winning symbols pay out at their normal rates. Additionally, winning this prize requires that the player completes the puzzle during the puzzle bonus round.
There are two types of Wild symbols in the game. The 1×4 Wild will fill an entire reel in the game and will pay out winnings with a multiplier of 8×. The 2×4 Wild will span two reels in the game and pay out winnings with a multiplier of 64×. Should the player score winning combinations with more than one of these Wild symbols, the multipliers will be combined.
The Hook symbol will be featured on the outer reels (1 and 6). The Hook will transform any high-paying character symbols in the same row as the Hook into a 1×1 Wild symbol. This increases the chances of the player winning prizes during their play session. The Hook is only featured during the bonus and Free Spins rounds.
The puzzle bonus round will play before the player enters the Free Spins round, if they land three or more Scatter symbols on reels 2 to 5. During this bonus round, the minimum Wild symbol value will be set for the player's Free Spins round, the player's Hooks will be activated and they may win additional Free Spins. Should the player complete the puzzle during this round, they will win the maximum prize in their Free Spins round.
The player will win Free Spins if they land three or more Scatter symbols on reels 2 to 5. Prior to entering the Free Spins round, the player will play through the bonus puzzle round.
The slot features two Bonus Buy options for the player to purchase their entry into the Free Spins round. The player can buy 75× and 150× the total bet. Additionally, the player can also place an Ante Bet for 2× the total bet to increase the chances of Scatter symbols landing on the reels.
Yes, the slot is fully optimised for iOS and Android devices. There is no need to download the game onto a player's device. The slot will play in any web browser on a mobile device.