Book of 99 is a distinctive video slot crafted by Relax Gaming, offering a gameplay experience that emphasizes both fairness and engagement. Known for its unusually high Return to Player (RTP) of 99%, this slot attracts players who value consistent outcomes alongside the excitement of traditional reel-based games. The design incorporates a 5×3 grid layout, presenting a familiar yet strategic structure for new and experienced users alike. Players encounter symbols inspired by ancient Greek culture, including mythological heroes and sacred artifacts, all contributing to a classic yet polished visual theme. The game combines simple mechanics with rewarding features, allowing for easy-to-understand play while offering substantial bonus potential. Whether accessed in demo mode or through real money play, Book of 99 delivers a transparent, mathematically advantageous experience that stands out among contemporary slot offerings.
Relax Gaming, a developer celebrated for innovation and transparency, is behind Book of 99. The slot uses HTML5 technology, ensuring seamless performance across desktop and mobile platforms. With 5 reels and 3 rows, the slot offers 10 fixed paylines, which simplifies betting options while keeping gameplay engaging. Players can adjust wager sizes per spin to suit personal budgets, making it accessible for both casual users and more strategic gamblers. The interface is user-friendly, with clear controls and straightforward options for autoplay, bet adjustment, and accessing the paytable.
Book of 99 includes several features that elevate standard slot gameplay. The most notable is the “Book” symbol, which functions both as a wild and scatter. This dual role allows it to substitute for other symbols to complete wins while also triggering the free spins round when three or more appear on the reels. Upon activation, players receive 10 free spins, with one randomly selected symbol acting as an expanding symbol. During free spins, this symbol can cover entire reels when part of a winning combination, maximizing payout potential. Additionally, the free spins can be retriggered by landing additional Book symbols, providing opportunities for extended rounds and higher overall rewards.
To start, players select a bet amount and spin the reels. Each spin can result in combinations of symbols across the 10 fixed paylines. Winning strategies generally revolve around careful bankroll management and timing spins to take advantage of the bonus feature. Practical approaches include:
The slot combines high- and low-value symbols. Lower-value icons include classic card symbols, while higher-value symbols are thematic, representing Greek heroes and divine artifacts. The Book symbol is central to both standard and bonus gameplay. Understanding symbol values is key to optimizing play.
| Symbol | Description | Role |
|---|---|---|
| Book | Golden tome with intricate designs | Wild and scatter; triggers free spins |
| Hero | Greek warrior figure | High-value; can expand in bonus rounds |
| Card Symbols (10–A) | Standard playing card icons | Lower-value payouts in base game |
Book of 99 features medium volatility combined with an exceptional RTP of 99%. This setup provides a balanced approach where players experience relatively frequent smaller wins and occasional larger payouts during bonus rounds. The medium volatility ensures sessions are engaging without abrupt, high-risk swings, making the slot suitable for a wide range of players seeking both entertainment and favorable statistical outcomes.
Players aiming to increase their chances of winning often employ these strategies:
Book of 99 offers a blend of classic slot mechanics and mathematically favorable play, making it attractive to a wide range of players. Its combination of high RTP, intuitive interface, and rewarding bonus features creates a gaming experience that is both engaging and statistically advantageous. Whether you are exploring the slot in demo mode or wagering real money, Book of 99 provides a fair, enjoyable, and strategically rich environment that stands out in the modern online casino landscape.
