Welcome to our deep dive on 40 Thieves — the demo, the maths, and whether it earns a spot in your rotation. Developed by Bally Wulff, 40 Thieves arrives with a medium high volatility profile and a return-to-player rate of 96.16%. The maximum win sits at 5,000x, so there's serious upside on the table. Visually it's finished with a clean, modern look, with the action running on 25 paylines across 5 reels. Originally released in 2018, it has aged well. Let's break down what works and what doesn't.
Written by Sarah Mitchell · Last updated: March 2026
At its core, 40 Thieves is a slot game produced by Bally Wulff, built with crisp artwork and atmosphere and powered by a 5-reel grid running 25 paylines. The result is medium high volatility paired with a published RTP of 96.16%.
Where 40 Thieves earns its keep is the feature set. 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. All told, it's a solid entry in the Bally Wulff catalogue.
The RTP of 96.16% is right around the industry average of ~96%. This represents a fair return that's in line with what most modern slots offer.
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.
40 Thieves 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
40 Thieves by Bally Wulff is a solid offering that delivers good entertainment value. The 96.16% RTP combined with medium high volatility creates a well-balanced gaming experience.