Secret Sauna: upcoming slot by Slotmill
Christmas can wait, but the sauna cannot! In Secret Sauna, two brothers escape the freezing winter weather to enjoy their favourite holiday tradition. What begins as a cosy retreat soon heats up with glowing Hotspots, cascading wins and powerful Wild multipliers. With a playful contrast between the snowy outdoors and the warmth of the sauna, this festive adventure offers plenty of surprises behind its doors.
Secret Sauna Game Details
| Category | Details |
| Game Name | Secret Sauna |
| Provider | Slotmill |
| Release Date | December 1, 2026 |
| Game Type | Video Slot |
| Theme | Christmas, Winter Sauna |
| Game Grid | 7×7 |
| Pay Mechanic | Cluster Pays (5+) |
| RTP | 96.04% / 94.05% |
| Volatility | High |
| Bet Range | €0.20–€100 |
| Max Win | 10,000x bet |
Secret Sauna Base GameplayCluster Pays and Avalanche Wins
Secret Sauna uses a 7×7 grid where clusters of five or more matching symbols create winning combinations. Each winning cluster disappears, allowing new symbols to fall into the empty positions and potentially form additional wins through the Avalanche mechanic.
Free Spins symbols are collected in a meter outside the reels. When collected, they are also removed from the grid, allowing the Avalanche sequence to continue.
Wild Hotspots
Whenever a Wild symbol contributes to a winning cluster, it leaves a Hotspot behind. These Hotspots remain on the grid throughout the Avalanche sequence.
Once the final Avalanche of the spin is complete, all accumulated Hotspots transform into Wild symbols, providing another opportunity to form winning combinations.
Secret Sauna Wild HotspotsFree Spins and Wild Multipliers
During the Free Spins Bonus, Hotspots become even more valuable. Wilds involved in winning combinations leave Hotspots that remain on the reels until the bonus round ends.
When another Wild lands on a Hotspot, a multiplier is added, progressing from x2 to x3, x4 and higher. At the end of Free Spins, every Hotspot transforms into a Wild carrying its accumulated multiplier.
These multipliers are multiplicative. For example, a x2 Wild and a x3 Wild contributing to the same winning cluster produce a combined x6 multiplier.
Secret Sauna Free SpinsSuper Bonus
The Super Bonus follows the same Hotspot and multiplier mechanics as regular Free Spins, with one important enhancement: at least two Wild symbols are guaranteed on every spin.
This creates additional opportunities to establish Hotspots and build multipliers before the bonus concludes.
Keys Bonus
Secret Sauna also features a Keys Bonus, offering another bonus presentation alongside its main gameplay and Free Spins.
Secret Sauna Keys BonusBurst Mode, Fast Track and Xtra-Bet
Players can customise their experience through three additional features:
Burst Mode: Speeds up gameplay with faster automated spins.
Fast Track: Provides direct access to bonus features.
Xtra-Bet: Increases the stake for an improved chance of triggering the bonus.
Christmas Can Wait
Secret Sauna stands out by turning a cosy Christmas tradition into a multiplier-driven cluster slot. Its most interesting twist is the way Wilds leave Hotspots behind, with those positions becoming increasingly valuable during Free Spins and the Super Bonus. Combined with multiplicative Wild multipliers, Avalanche wins and a maximum payout of 10,000x the bet, the game offers more than a conventional festive slot. Outside, the snow keeps falling; inside, the excitement keeps building.
