Book of 99 Slot – Uncover Ancient Riches

Book of 99 Slot Review

Whether players love it or not, the Egyptian Book of… slot genre has become a cornerstone of online casino gaming. Countless developers have put their own spin on this formula, including Relax Gaming with its Book of 99 slot. This slot uses the familiar formula with a fresh mythology spin, revitalizing the concept with innovative mechanics.

On the surface, it doesn’t look that way. It’s a 5×3 slot with 10 fixed paylines and a familiar ancient Greek template. The slot’s standout feature are expanding symbols during the bonus round. However, with a collect feature in tow, players get extra ways to hit massive wins.

Available for free demo mode and real money at the top online casinos, Book of 99 pairs the classic Book of… appeal with high winning potential. On top of that, the developer advertises the RTP as 99%, which enhances its already great appeal. Take a look at our Book of 99 slot review to see what makes it stand out.

Game Details

What Makes Book of 99 Special?

The Book of 99 slot is a distinct game in the Egyptian/Book of… niche. While it maintains a classic formula, multiple expanding symbols and a collect feature puts it in a category of its own.

The 99 in the title refers to the unique progression system. During the base game, players can collect up to 99 wilds to help Odysseus’ ship move closer to its goal. In short, it aims to reunite Odysseus with his wife Penelope, which awards players with special prizes.

Additionally, compared to its Egyptian counterparts, Book of 99 has a much higher win potential. Its distinct graphics feature many popular characters from ancient Greek mythology, including heroes and monsters. The soundtrack matches the mystical theme adequately, completing an appealing audio-visual experience.

Game Mechanics and Features

Book of 99 operates on a very familiar theme and grid. It has 5 reels and 3 rows, filled with characters from ancient Greek mythology. Overall, it’s what Book of… slot fans can expect. Relax Gaming’s clean design makes the slot stand out. Its user interface and mechanics makes it perfectly playable on desktop and mobile platforms.

Symbol Breakdown and Features

The Greek mythology theme in Book of 99 is executed to perfection. It features authentic looking characters as well as stylized card royals. The characters feature Apollo, Pythia, Lamia, a cyclops, and Polyphemus in addition to the book wild and scatter.

In terms of features, there’s a regular free spins round with expanders as well as a collection feature.

Collection Feature

The slot features a wild collection meter inspired by Homer’s Odyssey. It depicts Odysseus’ voyage back home from the Trojan War. For each book wild you collect, Odysseus’ ship moves a step closer to home. You need 99 wilds to get there, which inspires the slot’s name. When you reach 99 wilds, you also get to the bonus round.

Free Spins

An alternative way to reach the free spins round is to land 3 or more scatters. Either way, players get 10 free spins to start with. Before the bonus starts, a book opens up to a random page, choosing the symbol that expands during the bonus round.

Like in all Book of… slots, this expanding symbol pays even in non-adjacent positions. In order to trigger the expanding feature for high-paying symbols, you need 2 of these to land on the reels. For lower-paying card royals, you need 3. The expanding feature works as expected, and the bonus round can be retriggered by 3+ Book scatters.

Our Book of 99 Testing Experience

Given the slot’s unique 99% RTP, we focused our testing efforts on the math model and practical player experience. Like with all of our real money slots reviews, this one included three phases.

The first phase was the conservative one, where we spun the slot 600 times at 40c each. The total was $240. During this phase, the slot’s RTP of 99% proved true. We encountered frequent smaller wins in the base game, and managed to land the bonus round 4 times. Expanding symbols provided returns up to x89, but we didn’t manage to reach the 99 wilds. While consistent wins flowed in, the phase still ended in a loss of $20.

For the medium stakes session, we played 300 spins at $1 each for a $300 investment. We triggered the bonus 6 times, with an assortment of mid to high-paying wins thanks to the expanding symbols. The highest win we hit was $134x, and we finished the session with a profit of $55.

For the high-stakes session, we played 400 spins at $5 each. The investment in total was $2,000. This session proved that even on higher stakes, the slot’s high RTP remains player-friendly. Via 8 bonus triggers and one collection-based trigger, we managed to make a profit of $604. The peak win was 267x with expanding symbols, proving how rewarding this bonus round can be.

Where to Play Book of 99

Players are in luck. We have a collection of reputable and safe online casinos where they can play this slot and many others. Our reviews reflect the truth about these casino sites, including a spot-on overview of all the departments.

Signing up at each of them is free, and you’ll be playing in a safe and secure environment. Don’t hesitate to visit our casino reviews and find your match with ease.

Book of 99 Slot Strategy Tips

One of the reasons why Book of 99 is so appealing to players compared to slots such as Book of Dead is the RTP. That 99% figure throws any slot strategy you know so far out the window. It requires a perfected and polished strategy compared to typical game, as the exceptional return rate means longer sessions and a larger bankroll.

Thanks to the dual bonus trigger system, players can go either way and still get to the bonus round. Collecting 99 wilds might seem like a chore, but it can happen quickly with a bit of luck. New players are advised to keep their bets small in the beginning. Plan your sessions carefully when you decide which approach to use.

The slot’s high volatility means that you can and should expect dry sessions. Individual wins may be smaller than expected, and the key to big wins remains in the bonus round. Keep your bets reasonable to hunt for the required scatters or collect wilds to get there and have fun.

Book of 99 Slot Pros & Cons