If you're trying to work out whether Expansion of Diamonds is worth your time, this hands-on review breaks it down. SYNOT Games are the provider behind it, tuning the slot for a medium-variance maths model, with 96% RTP. Dating back to 2024, it remains a regular pick. If everything lines up, Expansion of Diamonds can pay up to 5,000x your bet. You get a 5-reel grid running 15 paylines, all built with crisp artwork and atmosphere. The full verdict is below.
Written by Emma Roberts · Last updated: February 2026
This slot, Expansion of Diamonds, is the work of SYNOT Games, finished with a clean, modern look and powered by a 5-reel grid running 15 paylines. The result is a medium-variance maths model paired with a return-to-player rate of 96%.
Dig into the bonuses and Expansion of Diamonds starts to stand out. Look out for scatter symbols that unlock free spins and extra bonus rounds. The medium volatility strikes a middle ground that should suit most playing styles. On balance, Expansion of Diamonds is a dependable option worth a few spins in the demo first.
The RTP of 96% is right around the industry average of ~96%. This represents a fair return that's in line with what most modern slots offer.
A balanced volatility profile with a mix of smaller frequent wins and occasional larger bonus payouts. Suitable for players who want steady action without extreme swings.
About 1 in 3 spins results in a win. This is a moderate hit frequency that balances win frequency with payout size.
Expansion of Diamonds 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
Expansion of Diamonds by SYNOT Games is a solid offering that delivers good entertainment value. The 96% RTP combined with medium volatility creates a well-balanced gaming experience.