KA Gaming · May 4, 2026
With a value score of 87.8/100, Book of Skull stands out as one of KA Gaming's most player-friendly offerings.
Book of Skull from KA Gaming combines egyptian and horror themes with a competitive 95.79% RTP and Medium volatility.
The slot draws inspiration from ancient civilizations and mythology.
Key features include Free Spins, Expanding Symbols and Wild.
Players choose Book of Skull for its medium volatility offering balanced wins and the high-stakes expanding symbols in free spins that can cover reels for substantial payouts. The horror-infused visuals and underworld theme provide an atmospheric contrast to typical book slots.
The Book symbol triggers free spins where a random symbol expands across entire reels to maximize line wins, embodying the signature 'Book of' mechanic with a horror twist.
Extreme volatility requires deep pockets — 600-1000x bet bankroll recommended for a realistic shot at the max win.
★★★★ 4.8/5 — 200% up to $1,000
★★★★ 4.7/5 — 300% First Deposit Bonus
★★★★ 4.5/5 — 100% up to €100
| Metric | Book of Skull | Wu Song | Crazy Circus | Pirate King |
|---|---|---|---|---|
| RTP | 95.79% | 96.27% | 96.24% | 96.15% |
| Vol | Medium | Medium | Medium | Medium |
| Max Win | 78,834× | 70,950× | 63,784× | 62,350× |
| Value | 87.8 | 89.5 | 89.4 | 89.1 |
This slot's 95.79% RTP is 0.31% above KA Gaming's portfolio average of 95.48%.
Max win of 78,834x is 9.8x the market median. This places it among the top 6% for win ceiling.
Maximum volatility, maximum reward ceiling
Value Score of 87.8/100 (top 6% of all slots). This combines RTP, volatility, and win potential into one metric.
Above-average max win with moderate math. Good for players wanting big-win potential without extreme swings.
592 slots, avg RTP 95.48%
Theme Browse Ancient slots2257 Ancient slots available
Theme Browse Horror slots533 Horror slots available
Volatility More Medium volatility slotsBrowse all Medium volatility options
| Provider | KA Gaming |
| RTP | 95.79% |
| Volatility | Medium |
| Max Win | 78,834× |
| Hit Frequency | 25-33% |
| Math Profile | High Ceiling |
| Value Score | 87.8/100 |
| Risk Index | 3.9/10 |
| Win Potential | 8.5/10 |
| Bankroll Rating | 4.3/10 |
Book of Skull has an RTP of 95.79%, which is average compared to the industry standard of ~96%. For every $100 wagered, the theoretical return is $95.79 over extended sessions.
Book of Skull has Medium volatility, meaning it offers a balanced mix of frequency and size.
The maximum win potential is 78,834x your total bet.
Book of Skull was developed by KA Gaming. Explore all KA Gaming slots in our provider directory.
Book of Skull has a Value Score of 87.8/100, which is excellent. This score combines RTP, volatility, and max win into a single metric.
Many online casinos offer a demo mode for Book of Skull where you can play with virtual credits before wagering real money.
Book of Skull has a Risk Index of 3.9/10, making it low-risk. Relatively gentle on your bankroll.
| Bankroll | — |
| Return | — |
| Risk | — |
Whether you're chasing the 78,834x max win or enjoying the base game, Book of Skull offers a well-crafted slot experience.