Our review of Devil's Lock cuts through the marketing and looks at what matters: how it plays and how it pays. Developed by Bluberi, Devil's Lock arrives with very high volatility and a return-to-player rate of 95.95%. The maximum win sits at 132,000x, so there's serious upside on the table. Visually it's leaning into a halloween and horror aesthetic, with the action running on 5 reels and 40 paylines. It first went live in 2023 and still earns its place today. The full verdict is below.
Written by Sophie Williams · Last updated: February 2026
Devil's Lock is a game from Bluberi, leaning into a halloween and horror aesthetic. It runs on a 5-reel grid running 40 paylines with a very high volatility profile, and a return-to-player rate of 95.95%.
Where Devil's Lock earns its keep is the feature set. Look out for scatter symbols that unlock free spins and extra bonus rounds. With very high variance, this one is aimed at players who can ride out the swings for the top wins. Overall it's a well-rounded game that knows what it is.
At 95.95%, 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.
Very high volatility delivers the most extreme payout profile — long dry spells punctuated by potentially massive wins. Only recommended for experienced players with substantial bankrolls and high risk tolerance.
About 1 in 3 spins results in a win. This is a moderate hit frequency that balances win frequency with payout size.
Devil's Lock 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
Devil's Lock by Bluberi is a solid offering that delivers good entertainment value. The 95.95% RTP combined with very high volatility creates a well-balanced gaming experience.