Welcome to our deep dive on Mutagenes — the demo, the maths, and whether it earns a spot in your rotation. Peter & Sons are the developer behind it, tuning the release for a medium volatility profile, with a return-to-player rate of 95.93%. Visually it's built around a halloween theme, with the action running on 5 reels and 25 paylines. The maximum win sits at 5,000x, so there's serious upside on the table. Wins land at roughly a 30% hit rate, shaping how the sessions feel. But is it actually worth playing? Read on.
Written by Sarah Mitchell · Last updated: January 2026
At its core, Mutagenes is a release produced by Peter & Sons, leaning into a halloween aesthetic. It runs on 25 paylines across 5 reels with medium volatility, and a return-to-player rate of 95.93%.
The mechanics are what make Mutagenes interesting. Look out for scatter symbols that unlock free spins and extra bonus rounds. Its medium variance balances steady wins with the odd larger payout. All told, it's a solid entry in the Peter & Sons catalogue.
At 95.93%, the RTP is slightly below the industry average of ~96%. While this is typical for many popular slots, players should be aware of the slightly lower theoretical return.
A balanced volatility profile with a mix of smaller frequent wins and occasional larger bonus payouts. Suitable for players who want steady action without extreme swings.
About 1 in 3 spins results in a win. This is a moderate hit frequency that balances win frequency with payout size.
Mutagenes features scatter symbols that can trigger free spins rounds. Landing the required number of scatter symbols anywhere on the reels activates the free spins feature, giving you extra chances to win without additional bets. During free spins, special modifiers may apply to boost your winning potential.
3.0 / 5 — Good
Mutagenes by Peter & Sons is a solid offering that delivers good entertainment value. The 95.93% RTP combined with medium volatility creates a well-balanced gaming experience.