Book of 99
Provider
Relax Gaming
RTP
99.00%
Volatility
high
About Book of 99
Book of 99 by Relax Gaming is a slot with an atmosphere of ancient legends, a restrained visual style, and a sense of a slow-paced search. The session feels calm: base spins progress gradually, while the main interest comes from the anticipation of symbol collection and triggering the bonus.
The grid is set in a 5×3 format with 10 fixed paylines. Winning combinations are formed from left to right when matching symbols land on the reels, and the mechanics remain classic and easy to understand without additional explanation.
The key focus is on the collection system and the bonus game. In the base mode, special symbols are gradually collected, filling a meter and bringing the bonus closer, which can be triggered either randomly or after full completion. During free spins, a symbol is selected to expand and can cover entire reels, significantly increasing the chance of larger payouts. This mode creates the main tension and defines the slot’s potential.
The Wild symbol also functions as a scatter, contributing to both the bonus trigger and the collection mechanic. The slot includes free spins with an expanding symbol, so the gameplay is mainly focused on activating and utilizing this feature.
Book of 99 is a high volatility slot with an RTP of around 99%, making it suitable for players who are comfortable with a steady pace and less frequent wins in exchange for strong potential during the bonus game.
The grid is set in a 5×3 format with 10 fixed paylines. Winning combinations are formed from left to right when matching symbols land on the reels, and the mechanics remain classic and easy to understand without additional explanation.
The key focus is on the collection system and the bonus game. In the base mode, special symbols are gradually collected, filling a meter and bringing the bonus closer, which can be triggered either randomly or after full completion. During free spins, a symbol is selected to expand and can cover entire reels, significantly increasing the chance of larger payouts. This mode creates the main tension and defines the slot’s potential.
The Wild symbol also functions as a scatter, contributing to both the bonus trigger and the collection mechanic. The slot includes free spins with an expanding symbol, so the gameplay is mainly focused on activating and utilizing this feature.
Book of 99 is a high volatility slot with an RTP of around 99%, making it suitable for players who are comfortable with a steady pace and less frequent wins in exchange for strong potential during the bonus game.
