Book of 99 Slot Overview

In this new casino slot from Relax Gaming we get to take part in the Greek Odyssey written by Homer. There has for a long time been speculations about when this work really was created, where most proofs point towards that it is probably around 700 BC. But something that most people agree on is that this work is indeed very genial and captivating to the reader. Since you get to follow the legendary hero Odysseus on various adventures, where it was this mastermind who hatched the idea of building the Trojan horse. Creating the Trojan horse and hiding inside it before giving it to his enemies was a very ingenious move and its subsequent effects resulted in the ending of the 10-year Trojan War.

This story really shows what great skill Homer had when it came to writing and captivating the reader. This time, Relax Gaming has used its theme and created a new "Book of" slot, where we get to take part in nostalgic features that with a little new twist can be really festive to take part in.

Book of 99 is an online slot from Relax gaming that has 5 reels, 3 rows and 10 paylines. You can choose between making a of 0.10 and a of 100. So far, the information is quite basic, but something phenomenal then happens when we start talking about its RTP. Relax Gaming is coming with a slot that has an RTP of 99.00%. The game's volatility is high, Hit frequency is 29.83% and the lucky player can get a win of up to 12075X the bet.

Just as you start to suspect when you hear that a slot starts with "Book of", this slot has the nostalgic Expanding symbols that are activated within the free spins feature by landing 3 or more Wild symbols. To make the spins more rewarding, they have added a Collection feature which by collecting 99 Wild symbols also activates the free spins feature. As a result, the total features that you can take part in are Wild Symbols, Free Spins, Expanding Symbols and Collection.

Book of 99 Slot Information

The game's design consists of a Greek theme, where in the background you can see a lot of iconic buildings from its golden era. Where we have many large stately pillars that also form the frame of the slot. With characters taken from Homer's Odyssey who can land on the reels together with a suitable music, you quickly get in the mood. Relax wants to ensure that as many people as possible can take part in their games, which is why they have designed the Book of 99 so that it works on many devices. Where anyone who uses the mobile in a smooth way can take part in mobile slots free spins by landing 3 or more Wild Symbols.

The game's lower paying symbols consist of 10, J, Q, K and A, all of which have a beautiful shiny gem that adorn them. You create a win with these by landing at least 3 on adjacent reels starting on the leftmost reel. The higher paying symbols are Odysseus, a woman with a purple hood, a terrifying Siren and a Cyclops. These are initially in the size 1X1, but with the help of the Expanding Reels feature, the selected symbol can become 1X3 and cover a full reel. It is a slot that has a total of 10 different symbols where the last symbol you can take part in is the Wild and this is quite expectedly a book. The fact that the game has a lower number of symbols can be beneficial as winning combinations can certainly be created more often. It's time for us to dive deeper into this book and find out what features it can create along with the slot.

Book of 99 Slot Features

What is the max win in the slot Book of 99?

You can win of up to 12075X the bet.

What features are in the slot Book of 99?

The features Wild Symbols, Free Spins, Expanding Symbols and Collection.

Wild Symbols

This symbol helps to create more winning combinations on the reels by substituting for all other symbols. It is also the game's scatter symbol and if you collect 3 or more of this, the Free Spins feature is activated.

Free Spins

The Free Spins feature is the highlight of the game and what you want to activate quickly. By landing 3 or more Wild Symbols, this feature is activated, where you are then welcomed with 10 free spins. You can also manage to get more free spins by landing 3 or more Wild symbols within this feature, where you again get 10 free spins.

Expanding Symbols

Before you can start using these free spins, a random paying symbol will be selected. When you then land this selected symbol on the reels, it will expand to cover its entire reel. As an extra nice touch to these Expanding Symbols, they will be able to create winning combinations even if they are not really adjacent.


Judging by the text written so far, it is within the free spins feature that the real action starts, where you can, as mentioned, start that feature by landing 3 or more scatter symbols. You can also use the game's Collection feature to activate the free spins feature. When you spin the reels in the Base game and land Wild symbols, these will be collected, when you have then suitably collected 99 Wild Symbols, you will get to take part in the free spins feature. You will get an average bet value calculated from all the spins you used to successfully collect the 99 Wild Symbols.

Book of 99 Slot Conclusion

The classic Expanding symbols mechanic that Book of slots has had over the years is certainly something that has not passed us by unhindered. It provides fantastic entertainment during the game and sometimes in for example Book of Ra 6, we have on several occasions managed to scoop up big wins. Since it is something that has been around for a long time and played frequently, it can feel a bit worn out at first and when we first heard that Relax Gaming had now created such a slot, we sighed a little easily at first. But all games deserve an honest review and after reading and taking part in this slot, we quickly realized that it really has a lot to offer.

They have added a Collecting feature that makes it possible to activate the free spins feature more often, which is extremely appreciated as this is where the magic winnings are found. The number of Wild Symbols that you need to collect to activate this feature is fittingly 99 as in the slots name, but something else that also follows this number is unexpectedly the RTP. A slot that has 99% in RTP feels brutally high but really lovable, where we also saw this high number in, among others, Mega Joker from NetEnt. A phenomenon that does not appear very often but when the conditions become more favorable for the player it is truly grateful. When you also know that the chance to get a high maximum win of 12075X the bet, together with the combination of Expanding symbols, free spins and a crazy high RTP, it is difficult not to fall in love again with a slot type like this.

If you are looking for real online slots that have high payouts, entertaining features and a gigantic RTP, then the Book of 99 is truly a slot that must be tried.