Tom Horn Gaming · May 30, 2026
Among Tom Horn Gaming's lineup, Book of Darius offers one of the best risk-to-reward ratios: 95.78% RTP with Medium variance and a 19,291x ceiling.
How does Book of Darius stack up? At 95.78% RTP and 19,291x max win, this Medium volatility slot from Tom Horn Gaming earns a 83.2/100 value rating.
The slot draws inspiration from ancient civilizations and mythology.
Key features include Free Spins, Expanding Symbols and Cascading Reels.
Players choose Book of Darius for its high-volatility thrills and classic book-of free spins with expanding symbols that deliver substantial win potential up to 500x. The cascading reels and Arabian-themed adventure provide engaging, unpredictable sessions distinct from standard slots.
The Gonzo mechanic introduces an extra layer of unpredictability to spins, enhancing the adventure alongside the signature Book of free spins with random expanding symbols.
High variance demands patience — budget 400-600x your bet to weather dry spells and reach bonus rounds.
At 19,291x max win (2.4x market median), this slot offers above-average payout potential.
High variance with big win potential
Value Score of 83.2/100 (top 17% of all slots). This combines RTP, volatility, and win potential into one metric.
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| Provider | Tom Horn Gaming |
| RTP | 95.78% |
| Volatility | Medium |
| Max Win | 19,291× |
| Hit Frequency | 25-33% |
| Math Profile | Standard |
| Value Score | 83.2/100 |
| Risk Index | 3.9/10 |
| Win Potential | 7.4/10 |
| Bankroll Rating | 4.3/10 |
88 slots, avg RTP 95.83%
Theme Browse Ancient slots2257 Ancient slots available
Theme Browse Adventure slots4035 Adventure slots available
Volatility More Medium volatility slotsBrowse all Medium volatility options
Book of Darius has an RTP of 95.78%, which is average compared to the industry standard of ~96%. For every $100 wagered, the theoretical return is $95.78 over extended sessions.
Book of Darius has Medium volatility, meaning it offers a balanced mix of frequency and size.
The maximum win potential is 19,291x your total bet.
Book of Darius was developed by Tom Horn Gaming. Explore all Tom Horn Gaming slots in our provider directory.
Book of Darius has a Value Score of 83.2/100, which is excellent. This score combines RTP, volatility, and max win into a single metric.
Many online casinos offer a demo mode for Book of Darius where you can play with virtual credits before wagering real money.
Book of Darius has a Risk Index of 3.9/10, making it low-risk. Relatively gentle on your bankroll.
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Book of Darius earns its 83.2/100 Value Score through a combination of fair returns and impressive win potential.