

Play Sanatorium Secrets Slot Online
Overview
Loyalty rewards
Points
Level rewards
Cashback
Playback
Some rewards become available as you level up
Game statistics
Game type
slot
Provider
Pragmatic Play
Release
2026
Info
Sanatorium Secrets is a dark-themed online casino slot from Pragmatic Play that combines horror-inspired visuals with 4,096 ways to win and a feature-packed bonus structure. Set around a mysterious abandoned institution, the game uses transforming wilds, multiplier wilds, Hook symbols and a Puzzle feature that can influence the Free Spins round. You can play Sanatorium Secrets at NetBet Casino and explore its atmospheric gameplay.
About Sanatorium Secrets
Sanatorium Secrets takes place around a sinister medical institution surrounded by fog, crumbling architecture and an unsettling atmosphere. The game's theme draws heavily on psychological horror, with shadowy environments and mysterious characters helping create a tense setting.
The action takes place on a 6x4 grid with 4,096 ways to win. Matching symbols need to land across adjacent reels from left to right to create winning combinations.
You can find this game's RTP from the in-game menu. Its gameplay focuses heavily on wild symbols, transformations and multipliers, particularly during its Free Spins and Puzzle features.
How to Play Sanatorium Secrets
Choose your preferred wager before starting a spin. Winning combinations are created by landing matching symbols across consecutive reels, beginning with the leftmost reel.
The game includes standard symbols, special wilds, Hook symbols and scatters. The maximum stake is £5 in the UK. Players can check the paytable before playing to understand each symbol's value and how the different bonus mechanics interact.
Sanatorium Secrets also offers an optional ante bet and feature-buy mechanics in eligible jurisdictions. Availability may depend on local regulations.
Sanatorium Secrets Symbols and special features
Lower-value symbols include playing-card ranks from 9 through to Ace, while four character symbols provide the higher-value payouts.
Regular 1x1 wilds can appear on reels two through five and substitute for normal paying symbols. The larger 1x4 Wild can also appear on these reels and may carry a 4x or 8x multiplier.
A 2x4 Wild can appear on reels three and four with a multiplier ranging from 8x to 64x. When several multiplier wilds contribute to the same winning combination, their multiplier values are added together.
The Hook symbol appears on the outside reels. It can collect matching premium symbols from its row, transform those symbols into 1x1 wilds and double wild multipliers that it passes over.
Sanatorium Secrets Bonus Rounds
One of the game's central bonus mechanics is the Puzzle feature, which takes place before Free Spins begin.
Puzzle pieces lock into position when they land. Each new piece resets the available respins and adds one extra Free Spin to the upcoming bonus. Filling an entire reel with puzzle pieces can turn the premium symbol above that reel into a wild for the Free Spins round.
Hook symbols can also appear during the Puzzle feature and then return on every Free Spin in random positions. Completely filling reels two through five with puzzle pieces awards the game's maximum win and immediately ends the feature.
Sanatorium Secrets Free Spins
Landing three scatter symbols triggers the standard Free Spins feature. Landing three scatters together with the Super Scatter activates Super Free Spins.
The bonus begins with six Free Spins, with two additional spins awarded for each qualifying scatter beyond the third.
During the round, wild symbols created during the Puzzle feature can appear across the middle four reels. Hook symbols can interact with these transformed wilds, turning them into 1x1 wild symbols while doubling their existing multipliers.
When Super Free Spins are activated, two Hook symbols are guaranteed during the preceding Puzzle feature, increasing the potential for additional wild interactions.
Sanatorium Secrets Theme and Graphics
Sanatorium Secrets uses a gloomy psychological-horror theme dominated by fog, dark corridors and an intimidating institution in the background.
Character designs and distorted symbols reinforce the unsettling atmosphere, while the bonus round creates a more dramatic visual change as the mysterious building appears to burn. Animations surrounding the Hook and expanding wild symbols make the game's major features easy to follow.
Sanatorium Secrets Mobile experience
Sanatorium Secrets is designed for compatible smartphones and tablets as well as desktop devices. The 6x4 grid adapts to smaller screens while keeping the betting controls and special symbols visible.
The Puzzle feature, multiplier wilds and Free Spins mechanics remain accessible when playing through a supported mobile browser.
Sanatorium Secrets Real money
Sanatorium Secrets can be played for real money at NetBet Casino where available. Real-money gameplay provides access to its complete range of standard spins and bonus mechanics, including the Puzzle feature, Hook symbols and Free Spins.
Remember that every spin is determined by chance. Previous results do not influence future outcomes, so players should always choose stakes within their personal budget.
Similar games to Sanatorium Secrets
Players who enjoy the darker atmosphere and feature-heavy gameplay of Sanatorium Secrets may also want to explore Mental and Release the Kraken 2. Both Pragmatic Play titles use distinctive themes alongside bonus mechanics, wild symbols and high-impact feature rounds.
Sanatorium Secrets FAQs
What is the RTP of Sanatorium Secrets?
You can find this game's RTP from the in-game menu.
How do you trigger Free Spins in Sanatorium Secrets?
Landing three scatter symbols activates Free Spins, while three scatters together with the Super Scatter trigger Super Free Spins.
What does the Hook symbol do in Sanatorium Secrets?
The Hook can transform matching premium symbols into wilds and double the multipliers of wild symbols that it passes over.
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