BOOKslots
Observed RTP vs officialpaid รท wagered over the sampled bets, with a 95% band
24h
โ
7d
0.00%ยฑ0.00
1 betsโ
30d
1089.33%ยฑ4251.8
2 betsโ
90d
1089.33%ยฑ4251.8
2 betsโ
All
1089.33%ยฑ4251.8
2 betsโ
Per casino, 30d
-0.5%2670.8%5342.0%
The marker is the RTP each casino publishes for this game. An amber bar means that figure is outside the 95% band of what we observed there; grey bars are below the minimum sample.
This gameall sampled bets
- Bets
- 3
- Wagered
- $605
- Paid
- $2,777
- Max multiplier
- 2,543x
- Max payout
- $1,682
too earlyNot enough bets over 30d to compare with the official RTP yet. Every spin is independent.
Official RTPas published by the studio and each casino
Game factsfrom studio.engine.io
A slot with high volatility and wins up to 20,000ร the bet, released in September 2026.
- RTP
- 96.00%
- Volatility
- High
- Released
- Sep 2026
Max win 20,000x, not hit in the feeds since 2 Nov 2026
Demos aren't available in your country. We hide demos where casino links are hidden, and in the UK.
From studio.engine.io ยท read 13h agoStudio page โ, opens in a new tab
Multiplier distribution30d, sampled bets
2 sampled spins, 50% of them paid something.
- 1 spin
- paid 10x+, too few to put a 1-in-N figure on
- 1 spin
- paid 100x+, too few to put a 1-in-N figure on
- 1 spin
- paid 1000x+, too few to put a 1-in-N figure on
0
0-1
1-2
2-5
5-10
10-50
50-100
100-1000
1000+
- Studio volatility
- High
- Observed swings
- Compared once a slot has 20,000 sampled spins staked $0.10 or more in this window; this one has 2.
From 2 sampled spins; a small sample swings a lot, and every spin is independent. Bar height is square-root scaled so the rare high buckets stay visible. Hover a bar for the count.
Where it is played30d, share of sampled wagering
When players play30d ยท sampled bets by UTC hour and weekday, since 2 Nov 2026
MonTueWedThuFriSatSun
by hour
Busiest hour: Mon 14:00โ15:00 UTC with 1 bet; busiest time of day: 00:00โ01:00 UTC; busiest day: Mon. Observed on the public feeds we read, a sample: when people were seen playing, not when anyone should. Hours are UTC.
Biggest hitslargest payouts we saw on this game
Live RTP by casino30d, refreshes on reload
| # | Casino | Observed RTP | Official | Dev. | Bets | Wagered |
|---|---|---|---|---|---|---|
| 1 | Stake | 1089.33%ยฑ4251.8 | 96.00% | โ | 2 bets ยท below min | $101 |
About BOOKfrom the figures on this page
BOOK is a Helio labs slot. Over the last 30 days we observed 3 bets on it at 1 casino, too few to measure its RTP over 30 days; the official RTP is 96.00%. Its highest multiplier in the last 30 days was 2,543x. The biggest win we saw on it paid $1,682 (3.33x) at Stake on 9 Nov 2026. Over the last 30 days it was played most, by wager, at Stake.
More from Helio labs30 days, by observed wagering
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