Our review of Chance Machine 40 cuts through the marketing and looks at what matters: how it plays and how it pays. Developed by Endorphina, Chance Machine 40 arrives with a very high-variance maths model and 96.04% RTP. It first went live in 2018 and still earns its place today. The maximum win sits at 1,200,000x, so there's serious upside on the table. It's finished with a clean, modern look and plays out on 15 paylines across 5 reels. But is it actually worth playing? Read on.
Written by Sophie Williams · Last updated: February 2026
Chance Machine 40 is a title from Endorphina, finished with a clean, modern look. It runs on 5 reels and 15 paylines with a very high-variance maths model, and an RTP of 96.04%.
Where Chance Machine 40 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. On balance, Chance Machine 40 is a dependable option worth a few spins in the demo first.
The RTP of 96.04% is right around the industry average of ~96%. This represents a fair return that's in line with what most modern slots offer.
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.
Chance Machine 40 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
Chance Machine 40 by Endorphina is a solid offering that delivers good entertainment value. The 96.04% RTP combined with very high volatility creates a well-balanced gaming experience.