Have You Tried Book Of 99 | LeoVegas Casino

Have You Tried Book Of 99 Yet?

99 problems but a win ain't one! Flip through the library of slots in our Casino and open Book Of 99 from Relax Gaming. This slot with a monstrous RTP of 99% is set in Ancient Greece, where heroes and gods collide. Your journey begins here!


99% RTP

In case we haven’t made it clear, Book Of 99 boasts an RTP of mythical proportions at 99%! So what does this mean for you? RTP stands for Return To Player - this describes the amount a slot is expected to pay players back over a very large number of spins.

For Example: A slot with an RTP of 98% will give back $98 for every $100 that goes into it when calculated over millions of spins.

An RTP of 99% combined with this slot’s high volatility means you may not win on every spin, but when you do win you could emerge with heroically colossal wins!

A Hero’s Path

Book Of 99 shows it’s players 2 paths to their destined Free Spins, but which will be revealed to you?

Free Spins

Landing 3 or more Wild symbols triggers the Bonus Round, where players are awarded 10 Free Spins. During Free Spins, an expanding symbol is selected at random and grows to fill the entire reel with a maximum win potential of up to 5,000x the bet!


The Collection Meter fills up like Dionysus’s Cup, increasing a step with each wild and awarding players with 10 Free Spins once 99 Wild symbols have been amassed!

Why You Shouldn’t Pass up Book Of 99!

This ‘book of’ slot from Relax Gaming holds its own in its category, with a generous RTP bestowed by the gods. If that’s not enough to convince you, the simple mechanics combined with colossal payouts should. Grab your armor and slay Book Of 99 at LeoVegas Casino, home to over 2,000 slot games!