Our review of Diamond Mask cuts through the marketing and looks at what matters: how it plays and how it pays. This is a Bigpot Gaming slot game, sitting firmly in the a medium high-variance maths model bracket and paying back an RTP of 95.98%. The maximum win sits at 5,000x, so there's serious upside on the table. Visually it's wrapped in a diamond and gem theme, with the action running on 5 reels and 10 paylines. Originally released in 2017, it has aged well. The full verdict is below.
Written by Sophie Williams · Last updated: March 2026
This release, Diamond Mask, is the work of Bigpot Gaming, built around a diamond and gem theme and powered by 10 paylines across 5 reels. The result is medium high volatility paired with a published RTP of 95.98%.
Where Diamond Mask earns its keep is the feature set. 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. All told, it's a solid entry in the Bigpot Gaming catalogue.
At 95.98%, 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.
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 Mask 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 Mask by Bigpot Gaming is a solid offering that delivers good entertainment value. The 95.98% RTP combined with medium high volatility creates a well-balanced gaming experience.