Book of 99

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Casinolytics Rating

Book of 99

background image representing Book of 99

Book of 99 slot by Relax Gaming is inspired by the mythology of Ancient Greece. The incredible RTP of 99%, max potential win of 12,075x your stake and several bonus features make this release highly entertaining and appealing to casino streamers, especially those who enjoy the ‘Book of’ type of slots.

The whole gameplay is taking place on a 5x3 grid with 10 paylines. Players on different budgets, including high-rollers, can enjoy this high volatility release across all devices.

The Book symbol is both Wild and Scatter, triggering 10 extra spins when you land 3 of them in the view. Before free spins launch, one of the pay symbols is randomly selected to be the special expanding symbol throughout the whole feature. And on each spin, a special symbol expands to cover all of the positions on the respective reel after any regular wins have been paid. Another great thing about this feature is the possibility to retrigger it.

What makes this game stand out even more is the Wild Collection system. For every wild symbol landed in the main game, a collection meter on the side of the screen increases by 1 step. Collecting 99 Wilds activates the Free Spins round.

Even if you’re not a fan of ‘Book of’ slots, this release is quite entertaining and powerful in its own right. The amazing visuals and two possible ways of triggering Free Spins, not to mention a nice winning potential, make this game worth spinning.

Game image of Book of 99

Title: Book of 99

Provider: Relax Gaming

Launched: 04 May 2021

Tracked since: 20 Apr 2021


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