CASHFREEBook of 99 RTP: 99%
Book of 99 is a Relax Gaming slot. Its published RTP is 99%, so the house edge is 1%: for every $100,000 wagered the casino expects to keep about $1,000.
What you get back on Book of 99 with Duel and code Duel2027
Duel gives back 50% of the house edge from your first bet, and the Monday bonus adds up to 30% more by VIP rank, only with the code Duel2027.
| You wager | Entry (50%) | Mid (75%) | Top (80%) |
|---|---|---|---|
| $10,000 | $50 | $75 | $80 |
| $100,000 | $500 | $750 | $800 |
| $1,000,000 | $5,000 | $7,500 | $8,000 |
| Real RTP | 99.50% | 99.75% | 99.80% |
Run your own wager on Book of 99
Book of 99 rewards at other crypto casinos
The same game and the same $100,000 wager at ten other crypto casinos, from what each one publishes. Rates differ a lot and some are not public, so read the notes before you compare.
| Casino | Entry level | Top level | Data |
|---|---|---|---|
 Duel + Duel2027 | $500 | $800 | Official |
| THThrill | $240 | $700 | Reported |
 Stake | $350 | $350+ | Reported |
| GBGamba | $185 | $225+ | Reported |
 Shuffle | $218 | $218+ | Reported |
| GDGamdom | $125 | $200 | Unclear |
| RBRainbet | $73 | $200 | Unclear |
| BCBC.Game | $50 | $150 | Reported |
| RORoobet | $110 | $110+ | Reported |
| BBBetBolt | $50 | $50+ | Unclear |
| TBToshibet | $50+ | $50+ | Unclear |
Book of 99 FAQ
What is the RTP of Book of 99?
The published reference RTP of Book of 99 by Relax Gaming is 99%, which means a house edge of 1%. It is also published at 0%, so check the RTP shown in the game.
How much rakeback do I get on Book of 99 at Duel?
With the code Duel2027 you get 50% of the 1% house edge back on every bet: $500 per $100,000 wagered, and up to 80% ($800 per $100,000) with the Monday bonus at the top VIP rank.
What is the real RTP of Book of 99 with rakeback?
With 50% rakeback the 99% RTP plays at 99.50%, and up to 99.80% at the top VIP rank on Duel with the code Duel2027.
More Relax Gaming games
- Money Cart 2 98%
- Jurassic Party 96.47%
- Hellcatraz 96.46%
- Hex 96.43%
- Cluster Tumble 96.4%
- Money Train 2 96.4%
- Temple Tumble Megaways 96.38%
- Beast Mode 96.32%
- Dead Man's Trail 96.29%
- Santa's Stack 96.27%
All Relax Gaming games and their RTP
Games with a similar RTP
- Mega Joker 99%
- 1429 Uncharted Seas 98.6%
- Blood Suckers 98%
- Blood Suckers Megaways 97.66%
- Fruit Million 97.34%
- Joker's Million 97.34%
- White Rabbit Megaways 97.24%
- Alien Fruits 2 97.17%
RTP source: published reference value. Provider RTP can differ by version and by casino.
Get 50% up to 80% rakeback on Duel
Other Duel codes stop at 50%. Enter Duel2027 when you create your account.