Thinking about giving Duel of Kings a spin? We tested it thoroughly so you know what to expect. Developed by Apollo Games, Duel of Kings arrives with a medium-variance maths model and 99% RTP. Visually it's given an engaging visual treatment, with the action running on a 5-reel grid running 10 paylines. It first went live in 2025 and still earns its place today. If everything lines up, Duel of Kings can pay up to 5,000x your bet. But is it actually worth playing? Read on.
Written by Sophie Williams · Last updated: January 2026
Duel of Kings is a title from Apollo Games, built with crisp artwork and atmosphere. It runs on a 5-reel grid running 10 paylines with a medium volatility profile, and 99% RTP.
Dig into the bonuses and Duel of Kings starts to stand out. Look out for scatter symbols that unlock free spins and extra bonus rounds. The medium volatility strikes a middle ground that should suit most playing styles. Overall it's a well-rounded title that knows what it is.
At 99%, this slot offers an excellent return to player rate, well above the industry average of ~96%. This makes it one of the more generous slots available in terms of long-term payout potential.
A balanced volatility profile with a mix of smaller frequent wins and occasional larger bonus payouts. Suitable for players who want steady action without extreme swings.
About 1 in 3 spins results in a win. This is a moderate hit frequency that balances win frequency with payout size.
Duel of Kings 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
Duel of Kings by Apollo Games is a solid offering that delivers good entertainment value. The 99% RTP combined with medium volatility creates a well-balanced gaming experience.