Book of 99 Slot

Book of 99 Slot
Book of 99 Slot

Game title: Book of 99

Game description: Reels; 5, Paylines; 10, RPT: 99%, Volatility: High, Maximum Win: 5000x

Author: Relax Gaming

Book of 99 Slot Review

Book of 99 is a 5 reel video slot with paylines. It comes with an RTP of 99% (yes that is correct, we said 99%), high volatility and a maximum win of 5000x your bet.

The title of Book of 99 pretty much sums up what this slot is about its literally a book type slot that comes with 99% RTP. Obviously this was enough to pique our interest and we have been waiting to play Book of 99 for quite some time.

As we all know there are a multitude of Book type slots with all of them featuring expanding symbols during the bonus game. To make a slot that stands out in this genre a developer really needs to think long and hard and that does seem to be what Relax Gaming have done with Book of 99.

Cranking up the Return to Player to the maximum is certainly an interesting move but they have not left it at just a single change from norm. Now while the base game of Book of 99 plays pretty much like most (well all) Book slots, the free spins game has been changed as well. There is no need for expanding symbols to be on connected reels, you can land one on reels 1 and 3 or 1 and 5 or 1 3 and 5 for example and still receive a win.

Combine this with the outstanding visuals and great audio and the whole 99 becomes more than just a gimmick and results in what is essentially a very good slot machine that we at Online Casino Slots News certainly enjoyed (and will continue to enjoy) playing.

If you are having problems trying to play the free demo of Book of 99 slot we suggest refreshing the screen. If the problem continues to persist please contact us.

  • Our Rating


  • Play on Desktop and Mobile
  • Free Demo Play
  • Available at a Recommended Online Casino


User Review
4 (3 votes)

4 comments on "Book of 99 Slot"

  1. Kiwi

    Loved the intro of Book of 99 and things really only got better from there

  2. Ragnar

    I have to hand it to them, Relax Gaming have done a bang up job with Book of 99. Just tried the demo (thanks for adding it) and really enjoyed playing it, I thought i was getting pretty tired of book slot machines but this is one i will happily play.

  3. All About Slots

    We have added the demo of Book of 99 slot, enjoy the free play and be sure to let us know what you think of this by leaving a rating and/or comment on our Book of 99 slot review!

  4. barq

    99% RTP? Well that certainly is something new and I look forward to finding out how Book of 99 plays

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