The game, explained
Book of 99
Book of 99 is a Relax Gaming video slot.
Read the game overview ↓Play free demo ↓Free play
Play Book of 99 demo
Virtual credits only. No account or deposit on Big Win Week. The provider may restrict access in your location.
Try the game here with virtual credits.
This demo is for adults 18+. The provider may apply additional checks.
The player loads content from the game provider. Allow it to play here.
The demo stays closed.
Return to player99%Game details
VolatilityHighGame details
Maximum win5000× bet (stated on the official page)Game details
Inside the game
How it plays
In numbers: an RTP of 99% reported by independent listings, High volatility per the same listings, a maximum win of 5000x bet (stated on the official page), 10 lines/ways, bets of EUR 0.10 – EUR 100.
Worth knowing: the RTP in effect depends on the operator — the in-game panel is authoritative.
Provider factual summary
Relax Gaming publishes Book of 99. The page classifies it as video slot. The page lists a bet range of €0.10 – €100.
Source: Relax Gaming game page (opens in a new tab). Source captured 2026-10-01.
These are provider-reported facts. Features and settings can vary by game version; check the game information panel.
Inside the game
Game screenshots
Game details & RTP versions
Values can differ between game versions and casinos. Check the game's information panel before you play.
- Game type
- Video Slot (official game page)
- RTP
- 99% (independent listing (SlotCatalog); not provider-published; RTP variants exist)
- Volatility
- High (independent listing (SlotCatalog); not provider-published)
- Maximum win
- 5000x bet (stated on the official page)
- Lines
- 10 (independent listing (SlotCatalog); not provider-published)
- Bet range
- EUR 0.10 - EUR 100 (official game page)
Continue exploring
