Book of 99
99%
RTP
12075x
Max Win
- Reels
- 5
- Rows
- 3
- Paylines (up to)
- 10
- Min Bet
- 0.1
- Max Bet
- 100
- Release Date
- May 4, 2021
About this Slot
Book of 99 from Relax Gaming combines a Greek theme with high-volatility action across 5 reels, 3 rows, and 10 paylines. Released in 2021, this slot features cascading mechanics that replace winning symbols with fresh ones, potentially triggering multiple wins from a single spin. With an RTP of 99% and a maximum win of 12,075x your stake, Book of 99 delivers substantial reward potential for players seeking bigger swings. The cascading system keeps the action flowing as successful combinations collapse and regenerate, creating extended winning sequences when conditions align.
Book of 99 Community RTP
Real RTP estimated from rounds contributed by the community, across all uploaders.
Not enough contributed rounds yet for a reliable community RTP estimate.
Based on 277 of 25,000 rounds needed.
Book of 99 RTP Calculator
Book of 99 has a theoretical RTP of 99%. Its volatility is High, so expect long dry spells punctuated by rare, large multipliers. Its win potential is capped at 12075x your stake. Use the calculator below to estimate your expected return, variance range and risk of ruin over any number of spins.
Book of 99 Variance Simulator
Book of 99 sessions can swing far from its 99% average - its volatility is rated High. The simulator runs many virtual bankroll runs to estimate the bust rate, typical drawdown and best/worst outcomes over a set number of spins - compare a cautious bankroll against an aggressive one.
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