Book of Eye has been catching plenty of attention, so we put it through its paces to see how it really holds up. This is a Onlyplay slot game, sitting firmly in the medium low volatility bracket and paying back a return-to-player rate of 95.8%. The maximum win sits at 5,000x, so there's serious upside on the table. Dating back to 2023, it remains a regular pick. It's wrapped in polished, characterful visuals and plays out on a 5-reel grid running 40 paylines. So does it deliver? Let's get into it.
Written by Sophie Williams · Last updated: January 2026
Book of Eye comes to us from Onlyplay, finished with a clean, modern look and powered by a 5-reel grid running 40 paylines. The result is medium low volatility paired with a return-to-player rate of 95.8%.
Dig into the bonuses and Book of Eye starts to stand out. Look out for scatter symbols that unlock free spins and extra bonus rounds. Thanks to its medium low variance, wins come often enough to suit casual, lower-risk play. On balance, Book of Eye is a dependable option worth a few spins in the demo first.
At 95.8%, 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.
Book of Eye 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
Book of Eye by Onlyplay is a solid offering that delivers good entertainment value. The 95.8% RTP combined with medium low volatility creates a well-balanced gaming experience.