Database position
How Book of 99 compares
These figures compare the game with other titles currently listed on Slot Data Hub and may change as the catalog grows.
+3.03 percentage points vs Relax Gaming average (95.97%).
Equal to or above 100% of 6,245 slots with known RTP.
A 12,075x max win is within roughly the top 24% of 6,003 slots with known max win.
57% of Relax Gaming slots with known volatility share this classification.
RTP, volatility, max win, theme, mechanic, grid, and features are available in the eight-field comparison model.
About Book of 99
Book of 99 is a Relax Gaming slot. The main listed values are 99% RTP, high volatility, and 12,075x maximum win. Other listed details include Mythology theme, Paylines mechanic, and 5x3 grid. The listed betting range runs from 0.1 to 100.
Missing theme, mechanic, payline or feature fields are left blank rather than estimated.
Book of 99 RTP and volatility
Book of 99 has a listed RTP of 99%, placing it in the 97%+ RTP Slots range. Its volatility is classified as high. Volatility describes how unevenly wins may be distributed and is separate from the theoretical return percentage. RTP is useful for comparing listed configurations, but individual sessions can differ substantially from the theoretical percentage.
Maximum win and betting range
The largest recorded win for Book of 99 is 12,075x the stake, which places it in the 10,000x+ Max Win Slots category. The listed betting range is 0.1 to 100.
A maximum-win multiplier is an upper limit, not an expected result.
Grid, paylines and hit frequency
The listed game details for Book of 99 include a 5x3 grid. A payline or ways-to-win value is not currently listed, so no number is inferred from the grid alone.
Bonus and feature data
For Book of 99, bonus buy is listed as not available and the feature list includes Book Collection Trigger, Free Spins, Expanding Symbols, and Retrigger.
Only listed features are shown; unavailable bonus details are left blank.
Relax Gaming slot context
Book of 99 is grouped with the rest of the Relax Gaming slot catalog. Across the current Relax Gaming catalog, there are 141 listed games, 95.97% average listed RTP among games with RTP data, and a newest dated release of Sep 24, 2026. This makes it possible to compare the title against other releases from the same studio using the same RTP, volatility, maximum-win and release-date fields.
How to use this slot data
Values can differ between operators, jurisdictions or game versions. When a field is unavailable, Slot Data Hub leaves it blank instead of substituting an estimate.
Book of 99 features
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