Tom Horn Gaming further expands its Book of Universe series with Book of Darius—a captivating video slot that invites you into a world of ancient mystery and rich rewards.

 Launched on February 4, 2025 as part of the company’s commitment to delivering immersive experiences, Book of Darius is set on a classic 5×3 reel grid with 10 fixed paylines.

The game embraces an ancient Persian theme, featuring intricately designed symbols including the sacred Book, hieroglyph-inspired icons, and regal imagery that evoke the splendor of a long-forgotten empire.

With an RTP of 95.00% and high volatility, Book of Darius offers the potential for substantial wins, with a maximum payout of up to 5,000x your stake. Betting options are flexible, catering to a wide range of players.

Before diving into the adventure, keep these key points in mind:

• Preferred Spin Options: Choose between manual spins or use the Auto Play feature for a more relaxed experience.

• Bet Options: Set your wager by selecting your desired bet level and coin value; for Book of Darius, bets range from a minimum of €0.20 to a maximum of €100.

• Turbo Mode: Activate turbo mode by long-pressing the Spin button to accelerate the reel spins.

Book of Darius is built around classic paylines mechanics. Wins are achieved by landing matching symbols along the active paylines, with payouts determined by both the number of symbols and their individual values. 

The Book symbol serves as the key scatter—landing three or more triggers the bonus round. Additionally, the game’s design is intuitive, making it accessible for both new and experienced players while still offering depth and excitement through its layered features.

The true allure of Book of Darius lies in its engaging bonus features, which are detailed below:

• Free Spins Round: Activated when you land three or more Book scatter symbols anywhere on the reels. Once triggered, you enter a free spins mode where wins are enhanced, and one symbol is randomly selected to become an expanding symbol, covering entire reels and boosting your payout potential.

• Expanding Symbol Feature: Occurs during the free spins round when one symbol is randomly chosen. This symbol expands to cover the entire reel, increasing the chance of landing multiple winning combinations and significantly raising the win multiplier.

Bonus Buy: This option is or players who prefer immediate access to the bonus round. You can bypass waiting for scatter symbols by purchasing direct entry into the free spins round for 40x your total bet.

I truly enjoyed playing Book of Darius. The ancient Persian theme and intricate design immediately drew me in, and I was pleasantly surprised by the dynamic free spins round—the expanding symbol feature added an extra layer of anticipation to every spin.

The Bonus Buy option was a real game-changer, allowing me to jump straight into the bonus action when I was in the mood for a big win.

Overall, Book of Darius delivered a richly immersive experience that combined classic slot mechanics with innovative features, making it a standout addition to Tom Horn Gaming’s Book of Universe series.