Book of 99

Book of 99 Slot Game

Step into a world of ancient legends with Book of 99, a captivating slot from Relax Gaming. This popular slot invites you on a seaside quest in ancient Greece, with an intrepid hero, mysterious artifacts, and rewarding free spins fueled by the magical Book symbol. Book of 99 stands out among "book slots" for its generous features, immersive theme, and rewarding bonus mechanics.

Book of 99 Features & Gameplay

Set against a vibrant Grecian backdrop, Book of 99 is played on 5 reels with 3 rows and 10 paylines. The symbols include classic Greek heroes, monsters, amphorae, and, of course, the titular Book. The Book symbol serves both as a wild and scatter—substituting for other symbols and triggering the much-anticipated free spins round.

Book of 99 Bonus Mechanics

The heart of Book of 99 is its Free Spins feature, triggered when three or more Book symbols land anywhere on the reels. When this happens, you’ll receive 10 Free Spins. Before the session starts, a random symbol is chosen as a special expanding symbol for the bonus round.

• Special Expanding Symbol: On each spin, when enough of the chosen symbol land, they expand to cover the reel—payouts are awarded no matter their position. This feature boosts the potential for massive wins.
• Bonus Buy Option: For players who want instant entry into the bonus round, Book of 99 offers a feature buy—instantly trigger the Free Spins for 100x your play. This is perfect if you’re hunting for big rewards and don’t want to wait for the scatter-triggered bonus.

Additionally, Book of 99 offers an innovative Collection Meter: every non-bonus spin with a scatter Book symbol adds to your meter. Once you collect 99 Books, the bonus round automatically activates—another way to enjoy the Free Spins without waiting.

Play Book of 99 on MyPrize US

You can experience the legendary features of Book of 99 right now at MyPrize US free-to-play social casino. MyPrize US is home to the largest game selection, the fastest redemption times, and the most exciting rewards. Play for epic wins with no purchase necessary—just fun, social rewards.

Standout Features

• Both wild/scatter Book symbol
• 10-payline classic slot action with high volatility
• Feature buy: Instantly trigger Free Spins for 100x play
• Collection Meter ensures regular bonus activation
• Expanding symbol during Free Spins for enhanced payouts
• Fully optimized for mobile and desktop play

Game Theme and Graphics

Book of 99 transports you to the azure shores of mythic Greece. The reels are adorned with bright, storybook artwork—fearsome Medusas, noble heroes, golden artifacts, and parchment Books. Tranquil soundtracks and subtle animations immerse you in the legendary atmosphere, making this slot an ideal pick for fans of both classical and "book" themed slots.

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Frequently Asked Questions

What is Book of 99?

Book of 99 is a Greek mythology-themed slot from Relax Gaming, featuring 5 reels, 10 paylines, and an exciting free spins bonus with expanding symbols.

Where can I play Book of 99 online?

You can play Book of 99 right now at MyPrize US free-to-play social casino. MyPrize US offers the biggest selection of top-rated slots and exciting social features.

Who developed Book of 99?

Book of 99 was created by Relax Gaming, an industry leader known for visually stunning and feature-rich slot games loved by players worldwide. You’ll find more award-winning Relax Gaming slots at MyPrize US.

Keep an eye out for the newest Relax Gaming releases added to MyPrize US so you never miss the studio’s latest innovations.

Also, check out current MyPrize US promotions and rewards for even more win potential and exclusive benefits as part of the VIP program.

What special features does Book of 99 offer?

Book of 99 includes a unique Collection Meter, an expanding symbol during Free Spins, and the ability to buy straight into the bonus round with the Bonus Buy feature.

Can I play Book of 99 on my mobile?

Yes, Book of 99 is fully mobile-optimized and plays beautifully on all smartphones, tablets, and desktops.