Thinking about giving Diamond Supercharge a spin? We tested it thoroughly so you know what to expect. Iron Dog Studio are the developer behind it, tuning the slot for high variance, with a return-to-player rate of 95.42%. Visually it's dressed up with a diamond theme, with the action running on 5 paylines across 3 reels. Dating back to 2026, it remains a regular pick. If everything lines up, Diamond Supercharge can pay up to 5,000x your bet. But is it actually worth playing? Read on.
Written by Daniel Chen · Last updated: February 2026
Diamond Supercharge comes to us from Iron Dog Studio. Presentation-wise it's leaning into a diamond aesthetic, and it leans toward high volatility at a return-to-player rate of 95.42%. Under the hood you'll find a 3-reel grid running 5 paylines.
Dig into the bonuses and Diamond Supercharge starts to stand out. Look out for scatter symbols that unlock free spins and extra bonus rounds. The high volatility means patience is rewarded — expect quiet spells broken by bigger hits. On balance, Diamond Supercharge is a dependable option worth a few spins in the demo first.
At 95.42%, 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.
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 Supercharge 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 Supercharge by Iron Dog Studio is a solid offering that delivers good entertainment value. The 95.42% RTP combined with high volatility creates a well-balanced gaming experience.