Book of Power — Iosif Games
Designed by Anna Dudek, Slot Mathematician at Iosif Games
Book of Power is a video slot by Iosif Games, mixing ancient civilizations and book themes with 10 payways and a generous RTP of 95.99%. Whether you spin for fun or for real stakes, the math model keeps every session fresh spin after spin.
At its core, Book of Power is built around a classic spin cycle with additional free spins, bonus bet and book of ... mechanic. Land the right symbols on the reels and unlock bonus rounds that can compound into big wins of up to 16000x.
Bonus features sit at the center of Book of Power, with additional free spins, bonus bet and book of ... mechanic powering the action. Each feature adds an extra layer of excitement — watch for the bonus symbols that open the top-paying sequences.
With High volatility, expect larger but less frequent payouts — and the 95.99% RTP keeps the long-run return competitive. That balance is a math model that suits patient players.
All in all, Book of Power by Iosif Games is a video slot that earns a spot in any slot fan's library. Try the free demo first to feel the features, then switch to real money when you're set.
Where to play for real money
| Casino | Bonus | Rating | Payout | Play now |
|---|---|---|---|---|
| Stake | 200% up to $2000 | 4.8/5 | Instant | Play now |
| BitStarz | 100% up to $500 + 180 FS | 4.8/5 | Instant | Play now |
| Roobet | 20% rakeback | 4.6/5 | Instant | Play now |
Book of Power specifications
| Attribute | Value |
|---|---|
| Provider | Iosif Games |
| RTP | 95.99% |
| Volatility | High |
| Max Win | 16000x |
| Paylines | 10 |
| Layout | 5-3 |
| Min Bet | 0.10 |
| Max Bet | 25 |
| Technology | JS, HTML5 |
| Released | 2026-08-29 |
Features
- Additional Free Spins
- Bonus Bet
- Book of ... mechanic
- Buy Feature
- Expanding Symbols
- Free Spins
- Level Up
- Multiplier
- RTP range
- Scatter symbols
- Wild
Themes
More from our studio
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| Frankie Dettori's: Magic Seven: Fortunes Of The Fox | 95.87% | Med | 13000x | Play |
| Ultimate Super Reels: Roaring Wilds | 96.29% | Med | 1700x | Play |
| Brazilian Speed Blackjack | 96.95% | High | 7900x | Play |
| Gem Splitter | 96.35% | Low-Med | 8300x | Play |
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Where to play for real money
| Casino | Bonus | Rating | Payout | Play now |
|---|---|---|---|---|
| MyStake | 150% up to $1500 | 4.6/5 | 0-1 hours | Play now |
| Dazard | 100% up to $5000 + 100 FS | 4.6/5 | Instant | Play now |
| Leon | 120% up to $500 | 4.5/5 | 0-1 hours | Play now |
| Fresh | 300% up to $1500 | 4.5/5 | Instant | Play now |
| Vavada | 100% up to $1000 + 100 FS | 4.9/5 | 0-1 hours | Play now |