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Book of 99 Slot: 99 Problems But RTP Ain’t One

rowan.hockridge Updated: 17.04.2025 18:40

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Book of 99 Slot Overview

Relax Gaming’s dropped another slot, and this one’s called Book of 99. Ancient Greece, Odyssey vibes – yeah, you know the drill. Homer’s epic, written way back when – 700 BC or something. Doesn’t matter. Point is, epic tale. Trojan Horse, Odysseus being a badass, the whole shebang.

Homer was a wordsmith, no doubt. Now Relax Gaming’s slapped that theme onto a Book-style slot. Familiar mechanics, but they’ve thrown in a couple of twists.

Book of 99 is your standard 5-reel, 3-row setup, with 10 paylines. Bets start cheap at 0.10, go up to 100. But here’s the kicker: 99.00% RTP. Yeah, you read that right. High volatility though. Hit frequency is about 30% (29.83% to be exact). Max win? 12075x your stake. Not bad.

Book series? Means expanding symbols in free spins, triggered by 3+ Wilds. Standard stuff. But they added a Collection feature. 99 Wilds collected, boom, free spins. So, features are: Wilds, Free Spins, Expanding Symbols, and Collection. Keep it simple, right?

Book of 99 Slot Info

Looks like Ancient Greece, obviously. Golden Age buildings in the background. Big columns framing the reels. Odysseus and the crew on the symbols. Music’s… Greek-ish. Sets the mood, whatever. Works on phones too, if you’re into mobile gambling. Free spins on the go, collect those Wilds.

Low symbols are your usual 10, J, Q, K, A – blinged out with gems. Need 3 in a row from the left to win. High pays? Odysseus himself, some purple-hooded woman, a Siren (scary), and a Cyclops. Start as 1×1, but expanding symbols can go 1×3, fill the reel. Ten symbols total. Wild is – surprise – a book. Fewer symbols can mean more wins, maybe. Time to crack this book open, see what it’s got.

Book of 99 Slot Features

What’s the max win on Book of 99?

12075x your bet. That’s the top whack.

What features are in Book of 99?

Wilds, Free Spins, Expanding Symbols, Collection feature. Basic package, with a twist.

Wild Symbols

Wilds swap for other symbols to make lines. Scatter symbol too. Hit 3 or more, you’re in the free spins round.

Free Spins

Main attraction: Free Spins. Want to trigger this. 3+ Wilds gets you 10 free spins. Get more Wilds during free spins? Another 10 spins on top.

Expanding Symbols

Before free spins start, one symbol picks itself. When it lands, it expands to cover the whole reel. Expanding symbols pay even if they ain’t connected. Nice touch.

Collection

Free spins are the goal. Wilds trigger it, yeah. But also, Collection feature. Base game, Wilds land, they get collected. Get 99 Wilds, free spins are yours. Bet level for free spins is based on the average of spins it took to collect those 99 Wilds. Different way to get to the bonus round.

F.A.Q.

Where can I play Book of 99?

You can spin the reels of the Book of 99 slot at various online casinos and bookmakers. Specifically, the text provided lists several platforms where this game is available, including [bookmakers list='4819,4854,4845,5097,4856,4857']. These are reputable online gambling sites that partner with Relax Gaming, the developer of Book of 99, to offer their games to players. To start playing, you would typically need to create an account at one of these listed bookmakers, deposit funds into your account, and then navigate to their slot game section where you can search for and launch Book of 99. Remember to gamble responsibly and ensure that online gambling is legal in your jurisdiction before participating.

What is the Book of 99 slot game about?

Book of 99 immerses players in the world of Ancient Greece, drawing heavy inspiration from Homer's epic poem, The Odyssey. The game's theme is rich with references to this classic tale, featuring iconic elements like Odysseus and mythical creatures. Visually, you can expect to see golden age Greek architecture in the background, grand columns framing the reels, and symbols populated by characters reminiscent of the Odyssey, such as Odysseus himself, sirens, and cyclops. The music and overall aesthetic are designed to evoke the atmosphere of ancient Greece, creating an engaging and thematic gaming experience. It's essentially a Book-style slot with a captivating Ancient Greek twist, blending familiar slot mechanics with a well-known and beloved historical setting.

What are the key features of the Book of 99 slot game?

Book of 99 boasts several exciting features designed to enhance gameplay and increase winning potential. The core features include Wild symbols, which also act as Scatter symbols to trigger Free Spins. Landing three or more Wilds initiates the Free Spins bonus round, awarding 10 free spins. During Free Spins, a special Expanding Symbol is selected, which can expand to cover entire reels and pay out even on non-adjacent positions. Furthermore, Book of 99 introduces a unique Collection feature. Every Wild symbol that lands in the base game is collected, and accumulating 99 Wilds automatically triggers the Free Spins bonus round. These features combine to offer a dynamic and engaging slot experience, providing multiple pathways to potentially lucrative bonus rounds and wins.

What is the Return to Player (RTP) of Book of 99 and is it considered high?

The Return to Player (RTP) for Book of 99 is an exceptionally high 99.00%. RTP is a theoretical percentage indicating the average amount of wagered money a slot game will return to players over a long period of play. An RTP of 99% means that, statistically, for every €100 wagered, the game is expected to return €99 to players in winnings over time. This is significantly higher than the average RTP for online slots, which typically ranges from 94% to 96%. While the high RTP is advantageous, it's important to remember that Book of 99 is also a high volatility slot. High volatility means that wins may be less frequent but potentially larger when they do occur. Therefore, while the high RTP suggests better long-term returns, players should be prepared for potential fluctuations in their bankroll during shorter play sessions.

How can I trigger the Free Spins bonus round in Book of 99?

There are two distinct ways to trigger the coveted Free Spins bonus round in Book of 99, offering players multiple paths to access this exciting feature. The first, and more traditional method, is by landing three or more Wild symbols anywhere on the reels during a single spin in the base game. Wild symbols in Book of 99 also function as Scatter symbols, and landing three or more of these will immediately award you with 10 free spins. The second method is through the innovative Collection feature. Every Wild symbol that appears on the reels during your base game spins is automatically collected. Once you have accumulated a total of 99 Wild symbols through this collection process, the Free Spins bonus round is automatically triggered, granting you 10 free spins. This dual trigger system increases your chances of entering the bonus round and experiencing the game's full potential.

What does the Expanding Symbol feature do during Free Spins in Book of 99?

The Expanding Symbol feature in Book of 99 significantly enhances the Free Spins bonus round and can lead to substantial wins. Before the 10 free spins commence, the game randomly selects one of the regular symbols to become the Expanding Symbol for the duration of the bonus round. Whenever this selected symbol lands on the reels during free spins, it will expand to cover the entire reel vertically. The beauty of Expanding Symbols is that they pay out even if they are not on adjacent reels or connected by paylines. If enough Expanding Symbols land on the reels, they can potentially fill multiple reels simultaneously, creating numerous winning combinations and significantly boosting your payout. This feature adds a dynamic and thrilling element to the Free Spins, making each spin potentially highly rewarding and increasing the anticipation for the selected symbol to appear.

Experts

Rowan Hockridge

From his home office in Leeds, Rowan has established himself as the go-to authority on slot tournament coverage and jackpot news. With fifteen years of experience in gambling journalism, he maintains a vast network of industry contacts while remaining fiercely independent in his assessments. His weekly column examining new slot releases reaches readers worldwide.

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