Looking for a Jewel Mastermind review or want to try Jewel Mastermind before playing for real? You're in the right place. Developed by Advantplay, Jewel Mastermind is a medium volatility slot with an RTP of 97.03% and a maximum win potential of 5,000x your stake, with an engaging visual design. With 20 paylines and a 5-reel, 20-payline layout, it delivers engaging gameplay.
Written by James Holloway · Last updated: January 2026
Jewel Mastermind is a slot developed by Advantplay with an engaging visual design. The game features a 5-reel, 20-payline layout with an RTP of 97.03% and medium volatility, offering impressive win potential for players of all experience levels.
At 97.03%, 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.
Jewel Mastermind 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
Jewel Mastermind by Advantplay is a solid offering that delivers good entertainment value. The 97.03% RTP combined with medium volatility creates a well-balanced gaming experience.