Thinking about giving Diamond Vapor a spin? We tested it thoroughly so you know what to expect. Endorphina are the provider behind it, tuning the release for medium high volatility, with an RTP of 96.04%. Top wins are capped at 20,000x your stake, a genuinely massive ceiling for the patient. It's built around a diamond and gem theme and plays out on 25 paylines across 5 reels. Expect a hit frequency around 30%, which sets the rhythm of play. So does it deliver? Let's get into it.
Written by Sarah Mitchell · Last updated: January 2026
Diamond Vapor is a game from Endorphina. Presentation-wise it's wrapped in a diamond and gem theme, and it leans toward a medium high volatility profile at 96.04% RTP. Under the hood you'll find a 5-reel grid running 25 paylines.
Where Diamond Vapor earns its keep is the feature set. Look out for scatter symbols that unlock free spins and extra bonus rounds. The medium high volatility strikes a middle ground that should suit most playing styles. On balance, Diamond Vapor 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.
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.
Diamond Vapor 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
Diamond Vapor by Endorphina is a solid offering that delivers good entertainment value. The 96.04% RTP combined with medium high volatility creates a well-balanced gaming experience.