Book of 99 by Relax Gaming: RTP, volatility and max win
Book of 99 is a high volatility slot by Relax Gaming with 99% RTP and a 12,075x max win. Degen Score 60/100, #59 of 6,304 slots.
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Live leaderboards
| Leaderboard | Casino | Prize pool | Ends |
|---|---|---|---|
| MitchJones | Rainbet | $1,500,000 | Nov 30, 2026 |
| Cabrzy | Roobet | $500,000 | Dec 1, 2026 |
| Adin Ross | Rainbet | $300,000 | Nov 13, 2026 |
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| Xposed | Roobet | $300,000 | Nov 24, 2026 |
Slot facts such as RTP, volatility, max win and features come from the free slot database at slot.report, which tracks thousands of games from dozens of studios (CC BY 4.0). Studios often give casinos lower RTP versions of the same game, so check the info screen in the game before you play.