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Book of 99 free demo

Relax Gaming

Book of 99 slot by Relax Gaming

Demo mode · fun credits · no real money

Verdict

Book of 99 takes the familiar book-slot shape and dresses it in weathered Greek stone instead of the usual desert sand — shamans, ogres and a crowned king stand in for the scarabs and pharaohs, and a gold-edged book still does the heavy lifting across the grid.

A vertical meter marked 99 runs down the left edge of the screen, giving the base game a sense that something bigger is being tracked as you spin. Play it if you like the book format and want to see a genuinely different skin on it. Skip it if you've already played a dozen book slots and need a new mechanic, not just new art.

By the DemoSlots editorial team · Updated 23 Sep 2026 · How we test

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Screenshots

The book symbol paying out here shows how far it carries the reel, with a golden line marking the win across all three matching positions.
The stone-carved royals fill most of the reel here, with the gold book waiting in the corner and the meter marked 99 ticking along on the left.
The character portraits — including the sharp-eyed woman and the wide-eyed three-eyed figure — turn up together here alongside the hexagon and ring gems that round out the paytable.
This spin lands a spread of green, blue and purple gems across the grid, the kind of low-value fill that keeps the reels busy between bigger symbols.

Gameplay clip

Our own recording of the Book of 99 demo, muted.

How it plays

Five reels across three rows carry the game, with a run of card values — ten through ace, carved into chipped stone tablets — filling the lower paytable and four character portraits, a shaman, an ogre, a crowned king and a sharp-eyed woman, taking the top spots. Green, blue and purple gem symbols sit in between. A gold-edged book turns up across the grid and does the heavy lifting when it lands, and a vertical meter marked 99 runs down the left-hand side of the screen. The reels sit inside a weathered stone temple with columns either side, and a dark night sky behind the ruins gives the whole thing a calmer, moodier look than the genre's usual sun-bleached desert setting.

Who it's for

Good for genre regulars who've already worked through a dozen Egyptian book slots and fancy the same idea reset in Greek stone instead. The unexplained meter running down the left side will appeal to anyone who likes sizing a game up by watching it play rather than reading a rulebook first. It suits a curious, exploratory session more than a quick, familiar spin.

Pros

  • A genuinely different setting for the book format — Greek stone and night sky instead of the usual desert
  • Clean, easy-to-read five-by-three layout with a distinctive gold book symbol

Cons

  • The meter marked 99 isn't explained anywhere in the base game, so the first few spins are guesswork
  • Underneath the new dressing, it's still a familiar book-slot structure

At a glance

  • Book of 99 is a game by Relax Gaming, built on 5 reels.

FAQ

Who makes Book of 99?

Relax Gaming, a studio known for reworking familiar formats with unusual settings — here that means swapping the genre's usual Egyptian sand for Greek stone.

Is Book of 99 set in Egypt like most book slots?

No. This one runs through weathered stone columns under a night sky, with a shaman, an ogre and a crowned king standing in for the usual pharaohs and scarabs.

What are the betting limits on Book of 99?

Spins run from 0.01 up to 10.00 in the demo, which gives you a narrower range to play with than some book slots that stretch up to 100 a spin.

Does Book of 99 play like other book-format slots?

The shape is familiar — a glowing book symbol doing most of the work across a compact five-by-three grid — but you'll notice the stone-temple dressing and the meter running down the left side give it its own identity.

Themes & features

Book of

Sources: our own research and demo testing

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