Our review of Chance Machine 20 cuts through the marketing and looks at what matters: how it plays and how it pays. Endorphina are the developer behind it, tuning the game for a high volatility profile, with an RTP of 96.04%. Dating back to 2018, it remains a regular pick. Top wins are capped at 30,000x your stake, a genuinely massive ceiling for the patient. You get 5 reels and 10 paylines, all wrapped in polished, characterful visuals. Let's break down what works and what doesn't.
Written by Emma Roberts · Last updated: March 2026
This slot, Chance Machine 20, is the work of Endorphina. Presentation-wise it's finished with a clean, modern look, and it leans toward high volatility at 96.04% RTP. Under the hood you'll find a 5-reel grid running 10 paylines.
The mechanics are what make Chance Machine 20 interesting. Look out for scatter symbols that unlock free spins and extra bonus rounds. With high variance, this one is aimed at players who can ride out the swings for the top wins. All told, it's a solid entry in the Endorphina catalogue.
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.
High volatility means longer gaps between wins, but when wins do land, they can be significantly larger. A bigger bankroll and patience are recommended for this type of slot.
About 1 in 3 spins results in a win. This is a moderate hit frequency that balances win frequency with payout size.
Chance Machine 20 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 20 by Endorphina is a solid offering that delivers good entertainment value. The 96.04% RTP combined with high volatility creates a well-balanced gaming experience.