Curious what Diamond Hill actually feels like to play? Here's our full, no-fluff take. Tom Horn Gaming are the developer behind it, tuning the slot game for a high-variance maths model, with a published RTP of 94.96%. If everything lines up, Diamond Hill can pay up to 20,000x your bet. Dating back to 2019, it remains a regular pick. Visually it's built around a diamond and gem theme, with the action running on 40 paylines across 5 reels. But is it actually worth playing? Read on.
Written by Daniel Chen · Last updated: March 2026
This title, Diamond Hill, is the work of Tom Horn Gaming. Presentation-wise it's themed around diamond and gem, and it leans toward high variance at an RTP of 94.96%. Under the hood you'll find a 5-reel grid running 40 paylines.
The mechanics are what make Diamond Hill interesting. Look out for scatter symbols that unlock free spins and extra bonus rounds. With high variance, this one is aimed at players who can ride out the swings for the top wins. All told, it's a solid entry in the Tom Horn Gaming catalogue.
The RTP of 94.96% is below the industry average of ~96%. This is common for older slots or those with special features. The lower RTP may be offset by unique mechanics or higher maximum win potential.
High volatility means longer gaps between wins, but when wins do land, they can be significantly larger. A bigger bankroll and patience are recommended for this type of slot.
About 1 in 3 spins results in a win. This is a moderate hit frequency that balances win frequency with payout size.
Diamond Hill 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.
3.0 / 5 — Good
Diamond Hill by Tom Horn Gaming is a solid offering that delivers good entertainment value. The 94.96% RTP combined with high volatility creates a well-balanced gaming experience.