Book of Oz Slot Review

Book of Oz Slot Review

Book of Oz is a video slot game that was released in December 2018 by Micrograming. The slot might look like a regular book game, but it comes with a lot of great features, and a chance of getting a bonus with up to 25 free spins. The game comes with a max win of 5,000x, and the bet sizes range from €0.10 to €100 per spin.

Book of Oz Theme

Book of Oz is built up with an adventurous and magic theme, where the premium symbols come as colorful potions, and the wizard of Oz as the highest paying symbol. The scatters on Book of Oz work as scatters but also as wilds, and they’re made out of gold with “Oz” written in a colorful green on the cover. A total of three or more books are required to get a bonus.

The game itself is a 5-reel book game with 10 lines and a free spins bonus with expanding symbols. The lowest paying symbols range from 10-J-Q-K-A where the premium symbols go from Purple Potion -> Red Potion -> Blue Potion -> Wizard of Oz.

Bonus Features

Even though Book of Oz is built up as a magical world with the great magician The wizard of Oz as the main character, the game doesn’t come with many great features. There’s a single bonus available on Book of Oz, which can be obtained by spinning in 3 or more golden books.

When three or more books are achieved in a single spin, the bonus window will open up. As the window opens up, the Book of Oz is opened and a magical selection of the expanding symbol is started. The book goes through the different symbols available on the slot, and the one it stops on is selected as the expanding symbol for the bonus. For the symbol to expand a total of three symbols is needed on low paying symbols, and a total of two symbols is needed on the premiums.

Depending on the amount of books that were spun in, the bonus either comes with 10, 15 or 25 bonus spins. Three books gives a total of 10 spins, four books gives a total of 15 and five books gives a total of 25 free spins. 

While the bonus is active, it’s possible to get a retrigger by getting 3 or more books in a single spin.

The payout received from an expanding symbol depends on the amount of symbols on the screen. The table below illustrates the payouts for each symbol while a bonus is active.

SymbolPayout at 2Payout at 3Payout at 4Payout at 5 / Full screen
10No win5x25x100x
JNo win5x25x100x
QNo win5x25x100x
KNo win5x40x150x
ANo win5x40x150x
Purple Potion5x30x100x750x
Red Potion5x30x100x750x
Blue Potion5x40x400x2000x
Wizard of Oz10x100x1000x5000x

If a player manages to get a full screen with the Wizard of Oz as the active bonus symbol, the bonus will stop no matter the amount of spins left.

Book of Oz Respin Feature

A cool feature found on Book of Oz is the respin feature. This feature makes it possible for all players to make a respin after the initial spin, and thereby get a chance of getting a line or even get the last book needed for a bonus. The price of the respin depends on the symbols close to connecting.

The respin feature can be tempting, but it is also highly volatile, and can easily end up costing a lot of money if the luck isn’t on your side. An important thing to keep in mind before using the respin feature is that only wins that involve the respun reels will be paid.

Book of Oz RTP

Coming with an RTP of 96.5% the Book of Oz is placed in the average range of slot RTPs. It’s a high variance game that has made it possible for the users to play as they like. With a bet size of as low as €0.01 and all the way up to €100, all players are able to customize it as they like.

Book of Oz on Mobile

The video slot is optimized for all devices. This includes both smartphones, tablets and desktop computers. The game works on both iOs and Android devices, and is easy to use no matter the preferred device.


In conclusion, Book of Oz is an easy to learn video slot that comes with a great feature in terms of the respin feature. With an RTP of 96.5% and a max win of up to 5000x the game also has a lot of potential. Give it a try, and fall in love with the great animations and the magical design.

Do you want to try out Book of Oz?

Because Micrograming is a really popular provider in the iGaming industry, it’s fairly easy to find a casino where Book of Oz is available. To find a casino you can try out Book of Oz on, go check out our complete list of casinos with MicroGaming available.

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