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Book of 99 Online Slot (Relax Gaming)

Book of 99 slot is a 5 reel, 10 paylines game from Relax Gaming. On this page you can try Book of 99 free demo slot no download for fun and learn about all features of the game, without risk of loosing any money. If you want to play this game with real money you can find our collection of trusted and recommended online casinos further down this page.

Responsible Gaming

To access demo slot please confirm that you are at least 18 years old

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Facts & Features

RTP ? : 99%

Max Win: 5000x

Slot Rating: 7.6 / 10

Collect Symbols, Expanding Symbols, Retrigger, Scatter Pays, Special Symbol, Wilds,

Slot Themes

Ancient, Books, Creatures, Greek, Heroes, Mythology,
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Book of 99 Review

Book of 99 review

Book of 99 by Relax Gaming is an online slot which is playable on most devices, including mobiles and pads. This game has some interesting themes and exciting features to know about. Find out more from our Book of 99 slot review below. Further down this page you can also find more popular slots from Relax Gaming.

Pros and Cons

  • Mythology Themed
  • Outstanding RTP (99%)
  • Decent Max Win at 5000x
  • No Progressive Jackpot

Themes and Gameplay

Book of 99 gameplay

Book of 99 is designed with themes like Ancient, Books, Creatures, Greek, Heroes, Mythology, in mind. The layout of this game is pretty standard and consists of 5 reels with 10 possible paylines. In most jurisdictions you can also select the Autoplay option when playing Book of 99. You can choose from 10, 25, 50, 100 or even more spins. You can opt to stop Autoplay on a win, if a single win exceeds a certain amount, or if your balance increases or decreases by a chosen amount. This is a great way to stay in control and to play more responsibly.

Maximum Win, RTP and Volatility

Here you have the potential to win 5000 times your total bet. This can give you very big wins if you manage to hit some high paying symbols. This value is calculated on a very large number of spins, often a billion spins.

The RTP for Book of 99 is 99%. This is very good and higher than average for an online slot. RTP stands for Return to Player and is the percentage of stakes the game returns to the players. For example, if a player bets €10 the expected return for this game would then be €9.9. However, the RTP value is calculated over millions of spins which means the outcome of every spin will be totally random.

Game Features

Who doesn't like plenty of action and great features in a slot! Some of the most popular features available in Book of 99 is Collect Symbols, Expanding Symbols, Retrigger, Scatter Pays, Special Symbol, Wilds, It also has a bonus game, the most liked free spins bonus rounds and if you are lucky this is usually where you can win the big bucks.

Reviewed 5/4/2021 by CasinoSlotsGuru.com

Slot Rating: 7.6 / 10

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