Our review of Diamonal 81 cuts through the marketing and looks at what matters: how it plays and how it pays. Built by Adell, it lands as a release with medium low variance and an RTP of 95.47%. It's themed around gem and plays out on 25 paylines across 5 reels. If everything lines up, Diamonal 81 can pay up to 5,000x your bet. Let's break down what works and what doesn't.
Written by Emma Roberts · Last updated: January 2026
Diamonal 81 is a game from Adell, dressed up with a gem theme. It runs on 5 reels and 25 paylines with medium low volatility, and a published RTP of 95.47%.
Dig into the bonuses and Diamonal 81 starts to stand out. Look out for scatter symbols that unlock free spins and extra bonus rounds. The medium low volatility makes it forgiving on the bankroll, ideal for relaxed, longer sessions. Overall it's a well-rounded game that knows what it is.
At 95.47%, the RTP is slightly below the industry average of ~96%. While this is typical for many popular slots, players should be aware of the slightly lower theoretical return.
Medium-low volatility offers a good balance of regular wins with occasional larger payouts. Expect frequent hits with modest amounts, suitable for casual players who want low-risk entertainment.
About 1 in 3 spins results in a win. This is a moderate hit frequency that balances win frequency with payout size.
Diamonal 81 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
Diamonal 81 by Adell is a solid offering that delivers good entertainment value. The 95.47% RTP combined with medium low volatility creates a well-balanced gaming experience.