Diamond Mystery 20 Imperial Crown Deluxe Demo & Review 2026 – RTP, Features & Latest Wins!

Before you load Diamond Mystery 20 Imperial Crown Deluxe for real, spend a couple of minutes on how it genuinely performs. Greentube are the developer behind it, tuning the title for medium low variance, with a published RTP of 95%. If everything lines up, Diamond Mystery 20 Imperial Crown Deluxe can pay up to 5,000x your bet. Dating back to 2023, it remains a regular pick. You get 10 paylines across 5 reels, all wrapped in a diamond and gem theme. Let's break down what works and what doesn't.

Written by Rachel Kim · Last updated: January 2026

Diamond Mystery 20 Imperial Crown Deluxe Review – Game Overview

Diamond Mystery 20 Imperial Crown Deluxe comes to us from Greentube, themed around diamond and gem. It runs on 10 paylines across 5 reels with medium low variance, and a published RTP of 95%.

Where Diamond Mystery 20 Imperial Crown Deluxe earns its keep is the feature set. Look out for scatter symbols that unlock free spins and extra bonus rounds. The medium low volatility makes it forgiving on the bankroll, ideal for relaxed, longer sessions. On balance, Diamond Mystery 20 Imperial Crown Deluxe is a dependable option worth a few spins in the demo first.

Pros

Scatter symbols trigger free spins and bonus rounds
Impressive max win of 5,000x
Lower volatility suitable for casual players
HTML5 technology for smooth gameplay

Cons

Below-average RTP at 95%
Limited bonus features
Only 10 paylines limits winning combinations
No bonus buy option available

Diamond Mystery 20 Imperial Crown Deluxe RTP & Volatility

Return to Player (RTP)

95%

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.

Volatility

Medium Low

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.

Maximum Win

5,000x

Hit Frequency

~30%

About 1 in 3 spins results in a win. This is a moderate hit frequency that balances win frequency with payout size.

Diamond Mystery 20 Imperial Crown Deluxe Features & Bonus Mechanics

Scatter & Free Spins

Diamond Mystery 20 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.

Final Verdict

3.0 / 5 — Good

Diamond Mystery 20 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.

Diamond Mystery 20 Imperial Crown Deluxe – Frequently Asked Questions

What is the RTP of Diamond Mystery 20 Imperial Crown Deluxe?: The RTP of Diamond Mystery 20 Imperial Crown Deluxe is 95%, which is slightly below the industry average of ~96%. RTP stands for Return to Player and represents the theoretical percentage of wagered money that is paid back to players over time.
What is the volatility of Diamond Mystery 20 Imperial Crown Deluxe?: Diamond Mystery 20 Imperial Crown Deluxe has medium low volatility. 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.
Can I play Diamond Mystery 20 Imperial Crown Deluxe for free?: Yes! You can play the Diamond Mystery 20 Imperial Crown Deluxe demo here on GamesReviews with no registration or deposit required. The demo version plays identically to the real money version with the same RTP, bonus features, and mechanics.
What is the maximum win in Diamond Mystery 20 Imperial Crown Deluxe?: The maximum win in Diamond Mystery 20 Imperial Crown Deluxe is 5,000x your total stake. This is an impressive max win that can be achieved through the game's bonus features and special mechanics.
Is Diamond Mystery 20 Imperial Crown Deluxe available on mobile?: Yes, Diamond Mystery 20 Imperial Crown Deluxe has been fully optimised for mobile devices using HTML5 technology. It runs smoothly on all modern iOS and Android devices, with responsive touch controls and auto-scaling to fit any screen size.
Where can I see the Diamond Mystery 20 Imperial Crown Deluxe paytable?: You can view the full Diamond Mystery 20 Imperial Crown Deluxe paytable by clicking the info or menu icon within the game. The paytable shows all symbol values, winning combinations, special symbol functions, and bonus round rules at your current bet level. We recommend reviewing the paytable before playing to understand the payout structure.
Can I play Diamond Mystery 20 Imperial Crown Deluxe for free without registering?: Yes. Diamond Mystery 20 Imperial Crown Deluxe free play is available right here on GamesReviews with no registration, no download, and no deposit required. Simply load the demo above and play with virtual credits to experience all the game's features risk-free.