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Book of 99


Relax Gaming

Release Date:

May 04, 2021



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Book of 99 Summary

Book of 99 is an ancient Greek-themed online slot developed by Relax Gaming, based on the epic Greek Odyssey. The game stands out with its exceptionally high RTP of 99% and a maximum win potential of 12075x the bet. The 5-reel, 3-row slot features 10 paylines and high volatility, with a hit frequency of 29.83%. The game’s standout features include Wild Symbols, Free Spins, Expanding Symbols, and a unique Collection feature that can trigger free spins by gathering 99 Wild symbols. Starting from a minimum bet of €0.1 to a maximum of €100, players can embark on an adventurous journey with the legendary hero Odysseus in this nostalgic yet innovative “Book of” slot.

Book of 99 Gameplay

Book of 99 is a 5-reel, 3-row slot game with 10 paylines, developed by Relax Gaming. The betting range varies from a minimum of €0.1 to a maximum of €100, catering to both casual players and high rollers.

The game’s visual style is inspired by Greek mythology, with a backdrop of iconic buildings from the golden era, and large stately pillars forming the frame of the slot. The symbols on the reels are characters taken from Homer’s Odyssey, including Odysseus, a woman with a purple hood, a terrifying Siren, and a Cyclops. The lower-paying symbols are 10, J, Q, K, and A, each adorned with a beautiful shiny gem. The Wild symbol is a book, which is also the scatter symbol.

The game’s design, along with its suitable music, creates an immersive experience that quickly gets players in the mood. The slot is designed to work on many devices, including mobiles, ensuring that as many people as possible can enjoy the game.

The game’s mechanics include an Expanding Reels feature, where the selected symbol can become 1X3 and cover a full reel, enhancing the gameplay and winning potential. Despite having a lower number of symbols, the game offers a high volatility with a maximum win of 12075x and an impressive RTP of 99%. The hit frequency is 29.83%, adding to the excitement of the gameplay.

Book of 99 Features

Book of 99 offers a variety of special features that enhance its gameplay and appeal.

Wild Symbols

The Wild Symbols in Book of 99 serve a dual purpose. They substitute for all other symbols, helping to create more winning combinations. Additionally, they act as the game’s scatter symbol. Collecting 3 or more of these symbols triggers the Free Spins feature.

Free Spins

The Free Spins feature is a highlight of the game. It is activated by landing 3 or more Wild Symbols, awarding you with 10 free spins. You can also retrigger this feature by landing 3 or more Wild symbols during the free spins round, granting you an additional 10 free spins.

Expanding Symbols

Before the free spins begin, a random paying symbol is selected. When this selected symbol lands on the reels during the free spins, it expands to cover its entire reel. These Expanding Symbols can create winning combinations even if they are not adjacent, adding an exciting twist to the gameplay.


The Collection feature is another unique aspect of Book of 99. Wild symbols collected during the base game are accumulated. Once you’ve collected 99 Wild Symbols, the free spins feature is activated. The average bet value is calculated from all the spins used to collect the 99 Wild Symbols, adding a strategic element to the game.

These features contribute to the game’s appeal by offering varied gameplay and opportunities for big wins. Players might strategize around these features, such as aiming to collect Wild Symbols for the free spins round or focusing on landing the selected Expanding Symbol during free spins.

Book of 99 Conclusion

Book of 99 is a captivating online slot game developed by Relax Gaming, drawing inspiration from the Greek Odyssey written by Homer. The game’s unique selling points lie in its incredible RTP of 99%, high volatility, and a maximum win potential of 12075x the bet. The nostalgic yet entertaining features, including Wild Symbols, Free Spins, Expanding Symbols, and Collection, provide a thrilling experience for players.

In my expert opinion, the quality and enjoyment level of Book of 99 are top-notch. It stands out among other “Book of” slots, thanks to its impressive RTP and immersive theme. Its engaging features and outstanding winning potential can attract both new and seasoned players.

I strongly encourage readers to explore Book of 99 for themselves, as it offers a uniquely entertaining and rewarding experience. So, don’t miss the opportunity to join Odysseus on his epic adventure and snatch the possible grand rewards waiting for you!

Frequently asked questions about Book of 99

Who is the game provider for Book of 99?

Book of 99 was developed by Relax Gaming

When was Book of 99 released?

Book of 99 was released in May 04, 2021

What is the maximum amount you can win on Book of 99?

The max win on Book of 99 is 12075x your stake

What is the maximum bet amount on Book of 99?

The max bet is €100, this can vary on different casinos

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