Welcome to our deep dive on Evil Devil — the demo, the maths, and whether it earns a spot in your rotation. Peter & Sons are the software studio behind it, tuning the title for a medium high-variance maths model, with an RTP of 95.93%. Visually it's leaning into a halloween aesthetic, with the action running on 6 reels and a familiar payline structure. If everything lines up, Evil Devil can pay up to 10,000x your bet. So does it deliver? Let's get into it.
Written by Sarah Mitchell · Last updated: February 2026
At its core, Evil Devil is a slot game produced by Peter & Sons, leaning into a halloween aesthetic and powered by a straightforward 6 reels layout. The result is a medium high-variance maths model paired with an RTP of 95.93%.
The mechanics are what make Evil Devil interesting. Look out for scatter symbols that unlock free spins and extra bonus rounds. Its medium high variance balances steady wins with the odd larger payout. Overall it's a well-rounded slot game that knows what it is.
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.
Medium-high volatility means wins come less frequently but tend to be larger when they hit. Players should be prepared for dry spells between bigger wins, requiring a moderate bankroll.
About 1 in 3 spins results in a win. This is a moderate hit frequency that balances win frequency with payout size.
Evil Devil 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
Evil Devil by Peter & Sons is a solid offering that delivers good entertainment value. The 95.93% RTP combined with medium high volatility creates a well-balanced gaming experience.