Searching for an honest Diamond King review before you commit real money? You're in the right place. This is a OneGame game, sitting firmly in the a medium high volatility profile bracket and paying back 96.47% RTP. The maximum win sits at 5,000x, so there's serious upside on the table. It's themed around animal and plays out on 5 reels and 15 paylines. Here's how it stacks up.
Written by Daniel Chen · Last updated: March 2026
Diamond King comes to us from OneGame. Presentation-wise it's built around an animal theme, and it leans toward medium high variance at 96.47% RTP. Under the hood you'll find 5 reels and 15 paylines.
Dig into the bonuses and Diamond King starts to stand out. Look out for scatter symbols that unlock free spins and extra bonus rounds. Its medium high variance balances steady wins with the odd larger payout. Overall it's a well-rounded slot that knows what it is.
The RTP of 96.47% is right around the industry average of ~96%. This represents a fair return that's in line with what most modern slots offer.
Medium-high volatility means wins come less frequently but tend to be larger when they hit. Players should be prepared for dry spells between bigger wins, requiring a moderate bankroll.
About 1 in 3 spins results in a win. This is a moderate hit frequency that balances win frequency with payout size.
Diamond King 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 King by OneGame is a solid offering that delivers good entertainment value. The 96.47% RTP combined with medium high volatility creates a well-balanced gaming experience.