Play Book of 99
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Book of 99 at a glance
Book of 99 is a video slot by Relax Gaming with a 99% RTP and High volatility. Its maximum win is 5,000x the stake.
- Provider
- Relax Gaming
- RTP
- 99%
- Volatility
- High
- Max win
- ~5,000x
- Paylines
- 10
- Released
- 2021
RTP shown as published; max win is our estimate where the provider hasn't disclosed an official figure.
Book of 99 is a video slot by Relax Gaming with an RTP of 99%, well above the 95.8% industry average. 10 paylines. Gold and treasure theme.
The base game runs without bonus rounds or modifiers listed in our database. Bets range from $0.1 to $100 per spin. High volatility produces longer dry spells and occasional bigger wins. Keep session sizes modest.
The free demo runs on virtual credits with no registration and no download. Use it to learn the paytable before wagering real money.
How Book of 99 works
Book of 99 is a 5-reel video slot with 10 paylines.
You can try it for free in demo mode before wagering any real money.
RTP in Context
At 99%, Book of 99 offers strong long-term value. The house edge is under 3%, among the lowest in online slots.
Max Win Explained estimated
Relax Gaming has not published an official max-win multiplier for Book of 99. Our estimate based on the game's volatility and mechanics is around ~5,000x your stake. Actual hit frequency is very low on games with High volatility. Treat the figure as a ceiling, not a target.
$1 spin
$5,000
max possible
$10 spin
$50,000
max possible
$100 spin
$500,000
max possible
How to play Book of 99 responsibly
High volatility pays larger wins less often, so swings are steep. Only stake what you can comfortably lose, and use the free demo to understand the rhythm first.
Pros
- + High RTP at 99%, clearly above the 95.8% industry average
- + Free demo available, no deposit or registration needed
Cons
- − High volatility with steep bankroll swings
Book of 99 FAQ
What is the RTP of Book of 99? ▾
Book of 99 has an RTP (Return to Player) of 99%. That's 3.2 percentage points above the typical industry average of 95.8%.
What is the max win on Book of 99? ▾
Relax Gaming has not published an official max-win multiplier for Book of 99. Our estimate, based on volatility (High) and game mechanics, is around 5,000x stake. A $1 spin could hit roughly $5,000 at the top end. Check the in-game paytable for the provider's actual figure when available.
How volatile is Book of 99? ▾
Book of 99 is rated as High volatility. Wins arrive less often but tend to be larger. Keep session sizes modest.
Is Book of 99 available on mobile? ▾
Yes. Book of 99 by Relax Gaming runs as an HTML5 iframe that works on iOS, Android, tablet, and desktop browsers. No download or app install is required.
Can I play Book of 99 for free? ▾
Yes. The free demo on this page runs on virtual credits. No registration, no deposit, no download. Use it to learn the paytable and bonus triggers before playing for real.
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