Book of Ultimate Infinity Reels

by SG Digital

The Egyptian slot genre is oversaturated with many slots that seem identical - but that's not the case with Book of Ultimate Infinity Reels. Developed by Red 7 and SG Digital, Book of Ultimate Infinity Reels plays on 3-reels and uses the Infinity Reels to expand the reels with every win.

Each expanding reel increases the multiplier by 1 and continues to grow until the reels stop. If you manage to reach a certain amount of reels needed for the Book of Ultimate, then you'll trigger the free spins round.

Slot information

RTP: 96.50%
Volatility: High
Max Payout: 5,000x stake
Reels: N/A
Paylines: N/A
Jackpot: No
Min Bet: 0.20
Max Bet: 50.00
Category: Infinity Reels slots
Themes: Egyptian, Mythical
Release Date: December 2020

Our rating

“ An Egyptian adventure that you won't find anywhere else ”

3.8 out of 5

Win potential

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Book of Ultimate Infinity Reels Screenshots

Book of Ultimate Infinity Reels Features

It all begins with the Infinity Reels mechanic that adds 1 extra reel with each win. Each time you add a reel, you'll win a progressive win multiplier. There's no limit to how many reels you can add hence the name Infinity Reels.

You can trigger free spins by reaching the bonus by gaining a certain amount of reels. This changes during each spin meaning it can be 6 reels or something high like 15 reels. You'll gain 10 free spins and you'll have a symbol that becomes an expanding symbol. You can retrigger 10 free spins by reaching the bonus feature through free spins as well.

Book of Ultimate Infinity Reels - Infinity Reels

Infinity Reels

The Infinity Reels mechanic basically adds another reel for every win and continues until there are no more wins. Amazingly, there's a progressive multiplier that grows with each spin.

Book of Ultimate Infinity Reels - Free Spins

Free Spins

During the base game, there's a bonus indicator at the bottom of the screen that tells you how many reels until the bonus. Ultimately, you trigger the bonus by gaining either 6 or 15 reels.

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Book of Ultimate Infinity Reels Review

The Egyptian slot is growing tiresome with many games just being exactly the same. Thankfully, there are a few developers that are trying to re-invent the genre with new and exciting mechanics - which is the case with Book of Ultimate Infinity Reels.

Developed by Red 7 and SG Digital, Book of Ultimate Infinity Reels uses ReelPlay's Infinity Reels mechanic to add more thrills to the slot. On top of that, you'll find free spins and multipliers leading to wonderous amounts.


It's exactly what you'd expect in an Egyptian slot with a desert background filled with pyramids, the Nile and various palm trees. However, the beauty is in the detail of the slot with the pyramids having hieroglyphics on and the screen moving to uncover more of the visuals with the Infinity Reels.

On the reels, you'll find various figures within ancient Egypt such as Cleopatra, Horus, Ankhs and golden tombs. It's all befitting for the slot and done tastefully well.

Strangely, the music doesn't seem suited to Egypt and it's more suited for an action film with a heavy beat. Despite this, it fits in with the atmosphere and has a slightly Egyptian twang at the end of it.


The Infinity Reels mechanic is growing in popularity and becoming familiar across the iGaming world. Ultimately, you spin the reels and gain an additional reel per each win you land - that's about it.

All of the relevant menus are to the right of the screen and it should be noted that the bonus indicator is underneath the reels and clearly highlighted.

Win Potential

This slot starts off with a fantastic win potential with a solid RTP of 96.50% which is over the average standard. On top of this, you can win up to 5,000x your stake on the slot paired with high volatility gameplay.

However, the big wins come through the free spins round and we struggled to trigger it. It took us over 400 spins just to trigger the feature which is something to keep in mind.

Our Verdict

It's always a refreshing sight to see an Egyptian slot done well with some originality. With the design and reels expanding, you get a sense of travelling throughout Egypt which is marvellous.

If you love Egyptian slots and want something unique, then definitely give Book of Ultimate Infinity Reels a spin. For those of you new to Infinity Reels, this is the perfect starting point.

Charlie Vogelsang
Reviewed by Charlie Vogelsang Last updated on

As the Content Manager at Slot Gods, Charlie is focused on staying on top of the latest slot releases as well as finding the most recent trends. She spends her day searching for the best slots to be reviewed as well as managing most of the content that you will find on the site. Whether it’s the latest slot review from Relax Gaming or a guide on a brand-new mechanic, Charlie will be sure to have it covered on Slot Gods.

Learn more about Charlie here

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