Sanatorium Secrets Coming from Pragmatic Play

by Jamie Smith, 14 May 2026

Pragmatic Play’s latest new slot, Sanatorium Secrets, is coming to UK online casinos from June 1. The game is packed with slot features like a puzzle round, special features and a free spins bonus game that can be supercharged.

Sanatorium Secrets uses a 6×4 grid with 4,096 ways to win.

Sanatorium Secrets in Brief:

• Release Date: 1 June 2026
• Type: Video Slot
• Theme: Horror, Mystery
• Software Studio: Pragmatic Play
• RTP: 96.47%
• Hit Frequency: 1 in 3.32
• Bonus Hit Frequency: 1 in 214
• Volatility: Medium
• Special Features: Puzzle Round, Scatters, Wilds, Multipliers
• Bonus Rounds: Free Spins
• How to Trigger Bonus Round: Land 3 or more Scatter Symbols

Sanatorium Secrets, a spooky new slot from Pragmatic Play, is set to land at UK online casinos from June 1.

The game’s free spins bonus round is coupled with a puzzle round respins bonus, and there are other features like special wilds included on the reels as well.

Full Rules & Information About the Sanatorium Secrets Online Slot

Sanatorium Secrets has a large game zone with a 6×4 grid of reels filling the screen. There are 4,096 ways to win on the slot, which has traditional paylines.

Sanatorium Secrets keeps the minimum bet low but there are no jackpots available. Pragmatic Play has included multipliers, though, and they are bundled with the Wilds that pop up on the reels.

Sanatorium Secrets Symbols & Payouts

Pragmatic Play has used playing card ranks 9-A as the low-paying slot symbols in the game, with four characters then paying out larger amounts.

Most icons require three matching symbols to pay, except the top spooky woman icon, which only requires two. There are also different types of Wilds in Play, which can swap in for symbols to build winning combinations.

Playing card ranks 9-A are the low-paying icons on the reels.

• All symbols: 10
• Highest-Paying Symbol: Spooky Woman
• Wilds: Wilds
• Paylines Pay: Left to Right
• Maximum Win: 10,000x the stake size

Sanatorium Secrets Bonuses & Features

Wilds can work in different ways on Sanatorium Secrets, making them a key slot feature to check out. Regular 1×1 Wilds can appear on any reel other than the first one, while a 2×4 Wild can appear on the middle two reels. This special Wild lands with a multiplier of x8 to x64, boosting any wins it helps to make.

Sanatorium Secrets also has a special 1×4 Wild, which can appear on any of the middle four reels. This one can randomly have a multiplier of x4 or x8, so the Wild action can provide plenty of potential payouts on the new slot by Pragmatic Play.

Landing three scatters triggers the game’s fun free spins feature.

Another slot feature to discover on Sanatorium Secrets is the Hook symbol. This can only appear on the left or right reel, with the Hook symbol able to grab all of the high pay symbols that land on its row.

Then, the Hook symbol changes into a matching high pay symbol – or even into clusters of them – while it doubles any multiplier it passes through as well.

Scatters cannot land on the left reel, with three of these special symbols needed to trigger the bonus game on Sanatorium Secrets. Before the free spins begin, there is a puzzle round to play through with three respins awarded.

For each puzzle icon that lands during the round, an extra free spin is granted. Puzzles also replenish respins, so there are plenty of free spins up for grabs.

During the Sanatorium Secrets free spins bonus round, the Hook symbol can drop on either the left or right reel. When this happens, the Hook symbol will then move to a different spot on the reels at random for each free spin.

A super Scatter symbol can only land on the right reel of the game’s grid. If this lands and triggers the Sanatorium Secrets super free spins round, the bonus game is supercharged by two guaranteed Hook symbols in the puzzle round and the main free spins bonus round as well.

Similar Games & Best Alternatives

Spooky new slots are released throughout the year, even though they tend to be the most popular at UK online casinos around Halloween. The Crypt 2 is regarded as one of the top spooky slots on the market, with other options including the likes of Dynasty of Death and Blood Suckers by NetEnt, which is known for its high RTP.

Pragmatic Play’s best slots include Wolf Gold and Gates of Olympus, while the developer is regarded for its Sweet Bonanza hit and popular slots series The Dog House.

Uncover Pragmatic Play Slot’s Spooky Secrets

Horror-themed new slots tend to find a solid audience at UK online casinos, with Sanatorium Secrets boasting a lot of top slot features such as a puzzle round with respins and a free spins bonus that can be supercharged.

RTP of 96.47% is solid enough and the game’s maximum win of 10,000x the stake size is high enough to tempt players into spinning the reels on Sanatorium Secrets – if they are brave enough to enter the asylum.