Searching for an honest Book Of Horror review before you commit real money? You're in the right place. Built by Spinomenal, it lands as a game with a high volatility profile and an RTP of 95.95%. Visually it's dressed up with a halloween and horror theme, with the action running on 30 paylines across 5 reels. If everything lines up, Book Of Horror can pay up to 500,000x your bet. Dating back to 2020, it remains a regular pick. Let's break down what works and what doesn't.
Written by Alex Crawford · Last updated: January 2026
Book Of Horror is a slot from Spinomenal, themed around halloween and horror and powered by 5 reels and 30 paylines. The result is a high-variance maths model paired with an RTP of 95.95%.
Dig into the bonuses and Book Of Horror starts to stand out. Look out for scatter symbols that unlock free spins and extra bonus rounds. The high volatility means patience is rewarded — expect quiet spells broken by bigger hits. Overall it's a well-rounded slot that knows what it is.
At 95.95%, 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.
High volatility means longer gaps between wins, but when wins do land, they can be significantly larger. A bigger bankroll and patience are recommended for this type of slot.
About 1 in 3 spins results in a win. This is a moderate hit frequency that balances win frequency with payout size.
Book Of Horror 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 Horror by Spinomenal is a solid offering that delivers good entertainment value. The 95.95% RTP combined with high volatility creates a well-balanced gaming experience.