Welcome to our deep dive on Book of Darius — the demo, the maths, and whether it earns a spot in your rotation. Developed by Tom Horn Gaming, Book of Darius arrives with low volatility and an RTP of 95.05%. Originally released in 2025, it has aged well. If everything lines up, Book of Darius can pay up to 500x your bet. Visually it's built around a treasure and ancient theme, with the action running on 25 paylines across 5 reels. Here's how it stacks up.
Written by Daniel Chen · Last updated: February 2026
Book of Darius comes to us from Tom Horn Gaming. Presentation-wise it's leaning into a treasure and ancient aesthetic, and it leans toward a low-variance maths model at 95.05% RTP. Under the hood you'll find 25 paylines across 5 reels.
Dig into the bonuses and Book of Darius starts to stand out. Look out for scatter symbols that unlock free spins and extra bonus rounds. Thanks to its low variance, wins come often enough to suit casual, lower-risk play. On balance, Book of Darius is a no-frills option worth a few spins in the demo first.
At 95.05%, the RTP is slightly below the industry average of ~96%. While this is typical for many popular slots, players should be aware of the slightly lower theoretical return.
Low volatility means frequent small wins with less risk. This slot is ideal for players who prefer steady, consistent payouts and longer play sessions without dramatic bankroll swings.
About 1 in 3 spins results in a win. This is a moderate hit frequency that balances win frequency with payout size.
Book of Darius features scatter symbols that can trigger free spins rounds. Landing the required number of scatter symbols anywhere on the reels activates the free spins feature, giving you extra chances to win without additional bets. During free spins, special modifiers may apply to boost your winning potential.
2.8 / 5 — Average
Book of Darius by Tom Horn Gaming provides a straightforward slot experience. While it may not break new ground, it offers low volatility gameplay that will appeal to certain player preferences.