Book of Wild has been catching plenty of attention, so we put it through its paces to see how it really holds up. Developed by 1spin4win, Book of Wild arrives with a very high-variance maths model and an RTP of 97.14%. Visually it's wrapped in a book of and animal theme, with the action running on 5 reels and 15 paylines. If everything lines up, Book of Wild can pay up to 5,000x your bet. Dating back to 2023, it remains a regular pick. The full verdict is below.
Written by Daniel Chen · Last updated: February 2026
Book of Wild comes to us from 1spin4win, built around a book of and animal theme. It runs on a 5-reel grid running 15 paylines with very high variance, and a published RTP of 97.14%.
The mechanics are what make Book of Wild interesting. Look out for scatter symbols that unlock free spins and extra bonus rounds. With very high variance, this one is aimed at players who can ride out the swings for the top wins. All told, it's a solid entry in the 1spin4win catalogue.
At 97.14%, this slot offers an excellent return to player rate, well above the industry average of ~96%. This makes it one of the more generous slots available in terms of long-term payout potential.
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 Wild 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 Wild by 1spin4win is a solid offering that delivers good entertainment value. The 97.14% RTP combined with very high volatility creates a well-balanced gaming experience.