Book of Evil
- RTP
- 96.46%
- Volatility
- HIGH
- Max win
- 5,000×
- Hit freq
- -
- Grid
- -
- Bet
- -
- Released
- 2020-01-01
A playable demo is not available in your region.
Our take
SpinOn's Book of Evil frightens with a 96.46% RTP, 5000× max win, and spine-chilling graveyard atmosphere, wrapped in high-volatility mechanics.
SpinOn's decision to break from the Egyptian consensus and instead build a macabre, graveyard-themed Book slot is refreshing. Rather than pharaohs and scarabs, the reels are populated by devils, zombies, vampires, and werewolves—an aesthetic that immediately sets Book of Evil apart from its category competitors. The Book symbol remains the anchor mechanic: trigger free spins, expand during the bonus round, and chase the 5000× ceiling.
The 96.46% RTP is excellent, placing it among the highest-value Book slots in our batch. The high volatility is balanced by the strong RTP: you're not sacrificing fairness for excitement. Source material mentions expanding symbols in both the base game and bonus rounds, suggesting that wins can cascade and compound—a mechanic that amplifies the potential for larger payouts beyond the standard "match and multiply" loop.
The atmosphere is thick. Descriptions evoke fog, eerie whispers, and spectral imagery—a tone that genre enthusiasts will appreciate and others might find gimmicky. The visuals are reportedly well-executed, though without direct access to the game, we defer to reviewer accounts. For players tired of the homogenised golden-temple aesthetic that dominates the Book category, Book of Evil's darker tone is a genuine differentiator.
Pros
- 96.46% RTP is excellent and supports sustainable play
- Graveyard theme breaks free from the Egyptian consensus
- Expanding symbols create cascading-win potential
- 5000× max win aligns well with high volatility
Cons
- High volatility requires patience and bankroll discipline
- Spooky theme may alienate players seeking traditional Book aesthetics
- Expanding symbol mechanics could use clearer in-game explanation
Math & maxes
Math breakdown
- Volatility score
- 3 / 5
- Max win
- 5,000x the stake
FAQ
Why is this a Book slot if the theme is horror?
The Book mechanic (wild, scatter, free-spins trigger) is identical to Egyptian Books; SpinOn simply reskinned the aesthetic.
What do expanding symbols do?
During both base game and free spins, matching symbols can expand to fill reels, creating larger wins and potential cascades.
How does the graveyard setting affect gameplay?
It's purely cosmetic; the underlying slot mechanics are standard Book-slot fare.
Is the 96.46% RTP typical?
It's above average for Book slots; most sit in the 94–95% range.
