Searching for an honest Diamond Mystery 100 Imperial Crown Deluxe review before you commit real money? You're in the right place. Greentube are the developer behind it, tuning the slot game for medium low volatility, with a published RTP of 95%. You get a 5-reel grid running 40 paylines, all leaning into a diamond and gem aesthetic. The maximum win sits at 5,000x, so there's serious upside on the table. Dating back to 2023, it remains a regular pick. Here's how it stacks up.
Written by Alex Crawford · Last updated: March 2026
Diamond Mystery 100 Imperial Crown Deluxe comes to us from Greentube, dressed up with a diamond and gem theme and powered by 40 paylines across 5 reels. The result is a medium low volatility profile paired with a published RTP of 95%.
Where Diamond Mystery 100 Imperial Crown Deluxe earns its keep is the feature set. Look out for scatter symbols that unlock free spins and extra bonus rounds. Thanks to its medium low variance, wins come often enough to suit casual, lower-risk play. Overall it's a well-rounded title that knows what it is.
At 95%, 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-low volatility offers a good balance of regular wins with occasional larger payouts. Expect frequent hits with modest amounts, suitable for casual players who want low-risk entertainment.
About 1 in 3 spins results in a win. This is a moderate hit frequency that balances win frequency with payout size.
Diamond Mystery 100 Imperial Crown Deluxe 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 Mystery 100 Imperial Crown Deluxe by Greentube is a solid offering that delivers good entertainment value. The 95% RTP combined with medium low volatility creates a well-balanced gaming experience.