Book of 99 (Relax Gaming) - Slot Review / Free Play / 99% RTP

Book of 99

Book of 99 is a slot machine from the provider Relax Gaming. Classic slot genre with book mechanics, but with the addition of additional features and unforgettable big winnings is all about the slot Book of 99. In this review we have prepared for you all the necessary information.

Book of 99 (Relax Gaming) - Slot Review / Free Play / 99% RTP

Book of 99 Slot Main Info

DeveloperRelax Gaming
Max. Jackpot:х5000
Free Spins:Yes
Bet Range:0.1 to 100
Range in coins:1
Bonus game:Yes

Well, with the basic information you already know, but have not yet gone to play online casino for real money, we advise to play for free without registration and without deposit on our website. In this case there is no difference from playing for real money, but thanks to this you will understand whether you like this slot.

Where to play Book of 99 for real money.

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Book of 99 Gameplay

After you enter the slot first thing you need to specify the desired rate for a spin from 10 cents to 100 EUR. For a longer game you need to calculate the bet amount per spin from your total balance. So you will not only prolong the game, but also the chances of a big win. And if you want the spins to spin faster than usual, all you have to do is turn on turbo spins mode.

Book of 99 has standard game mechanics in which winning combinations are formed from 10 fixed lines.

Book of 99 (Relax Gaming) - Slot Review / Free Play / 99% RTP

Book of 99 Free Spins

Bonus game is activated on a roll of three or more Scatter symbols. Also, bonus spins can be activated after collecting 99 Scatter symbols during normal spins. At the start of the bonus spins are given 10 free spins and selected a special symbol that will expand to all reels and award the winnings

Cumulative bonus game.

During normal spins to the left of the playing field is a scale, it fills when Scatter symbols. When you collect 99 scatter symbols, the bonus game will start. When you change the bet size during the collection of 99 symbols will take into account the average bet size with the moments of the first scatter symbol.

Book of 99 (Relax Gaming) - Slot Review / Free Play / 99% RTP


In conclusion, we want to point out that the slot machine has clear advantages compared to other slots with book mechanics. Advantages are of course this 99% RTP and additional accumulative bonus game mechanics. And thanks to the high RTP value you’ll have a much better chance of catching a big win of x5000 of the bet amount than in other slots. So we definitely recommend Book of 99 for the game.

  • RTP 99%
  • Max Win x5000
  • Cumulative bonus game

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