Looking for a Book Of Diamonds review or want to try Book Of Diamonds before playing for real? You're in the right place. Developed by Spinomenal, Book Of Diamonds is a very high volatility slot with an RTP of 96.14% and a maximum win potential of 500,000x your stake, featuring a book of and fruit theme. With 20 paylines and a 5-reel, 20-payline layout, it delivers engaging gameplay.
Written by Sarah Mitchell · Last updated: March 2026
Book Of Diamonds is a slot developed by Spinomenal featuring a book of and fruit theme. The game features a 5-reel, 20-payline layout with an RTP of 96.14% and very high volatility, offering impressive win potential for players of all experience levels.
The RTP of 96.14% 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.
Book 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.
3.1 / 5 — Good
Book Of Diamonds by Spinomenal is a solid offering that delivers good entertainment value. The 96.14% RTP combined with very high volatility creates a well-balanced gaming experience.