Book of 99

Game Category

slots

Volatility

high

MGM MILLIONS

yes

Grid

5x3

About Book of 99

Face off against the gods and loot treasure hoards in Book of 99. Designed by the game gurus at Relax Gaming, the Book of 99 slot tweaks the traditional ‘Book of’ format with a route to free spins and expanding symbols.

A familiar five-reel, three-row grid sits between the stone pillars of an ancient temple. The background offers a nighttime glimpse of an ocean, cliffs and a lush landscape. Beautifully designed, multicoloured symbols stand out against this backdrop and, combined with the animations and sound effects, create an engaging slot experience.

Play Book of 99 and explore an immersive free spins bonus and the chance to win big.

How to Play Book of 99 Slot

Book of 99 incorporates a Greek mythology theme and showcases a handful of gods. Thanks to the straightforward layout and easy-to-use interfaces, it’s a cinch to play this slot.

Use the +/- buttons to adjust your bet and hit play to roll the reels. In the game’s menu, you can change the sound settings, learn more about the rules, and find all the information on symbol values, bonus triggers and paylines.

Playing cards from 10 to Ace are this slot’s low payers. A Lamia and a Cyclops, and the gods Pythia and Apollo, are the high-paying icons.

There’s also a Golden Book Wild.

How to Win Book of 99 Slot

Book of 99 is a high volatility slot with 10 paylines, and winning combinations form from left to right.

Matches of three or more low-paying symbols and two or more high-paying symbols constitute a win.

You can trigger the free spins bonus in two ways. Land three or more Golden Book Wilds or use the meter on the left. The meter collects every Wild that lands in the base game. The 99 counter will go down with each book symbol and the free spins round will begin when it reaches zero.

A random symbol (high- or low-paying) is selected and expands during the bonus. When this happens, it pays out in any sequence and does not have to be connected on adjacent reels.

Promotions and Offers

At BetMGM, we take online gaming to novel heights. Our new sign-ups can qualify for free spins as part of our welcome bonus. We also run regular and one-off events, which are open to all our eligible customers. These include the famous MGM Millions and monthly Drops & Wins.