Relax Gaming’s latest slot is available at Boom Casino! Set in the realm of Ancient Greece, Book of 99 is a book slot with some cool new features. Check out all the details in our new slot review!

Collect 99 books to trigger free spins

There are plenty of “book” slots out there, but some game providers strive to bring new to the genre. One of them is Relax Gaming, an innovative studio that is known for creating blockbusters like Temple Tumble Megaways and Money Train 2. The studio’s latest release is called Book of 99, a slot that offers a mythological theme and a couple of great additions to the “book of” formula.

Book Of 99 might look like a standard book slot on the surface, but there are a few things that set it apart from similar games. The slot has 5 reels, 3 rows, 10 paylines and a total of 9 symbols plus the book scatter. A full line of the top premium symbol will reward you with a 500x win. Landing three books triggers a free spins bonus where one random symbol is selected to become a special expanding symbol for the duration of the bonus.

One of the unique features in Book of 99 is a collection meter that offers a second route into the free spins bonus. When the meter is full, you will jump straight to the bonus round. You have to collect a total of 99 books in the base game in order to fill the collection meter all the way up. This means there are two different ways to trigger the bonus in Book of 99: by landing three books in one spin, or by collecting a total of 99 books over time in the base game.

Win up to 5,000x your bet in Book of 99

The collection feature isn’t the only thing that sets Book of 99 apart from most other book games - it also boasts a payout percentage of 99%, which is one of the highest RTPs you can find in the world of slots. The game also offers a max win of 5,000x, which can be achieved by filling the screen with the top premium symbol in the free spins bonus. With a unique bonus collection feature and an incredible RTP of 99%, Book of 99 is a fresh take on the crowded book slots genre. You can find Relax Gaming’s new title in our casino lobby now!