Diamond Mystery – 40 Imperial Crown deluxe Slot

Diamond Mystery – 40 Imperial Crown deluxe

Volatility

Medium

Diamond Mystery – 40 Imperial Crown deluxe is a 5-reel, 40-payline video slot from Greentube, the online division of Novomatic, built around a fruit theme. Its listed features include expanding wilds, a gamble feature and a pick bonus.

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Quick answer

Diamond Mystery – 40 Imperial Crown deluxe is a Novomatic (Greentube) slot (2024) with medium volatility. It uses 40 paylines with wild symbols, expanding wilds and gamble feature. An official free demo is available.

Key specs

Volatility: Medium
Grid: 5 reels
Pays: 40 paylines
Released: 12 April 2024

Not published by the provider: RTP, max win, bet range, jackpot

Top-rated casinos (check the game is available)

We haven't confirmed which partner carries this game.

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Key terms
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Key terms
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Key terms
18+. New customers only. Min deposit $50. 40x bonus wagering requirement. Max bet $10 while wagering. Cashback: 10% of net casino losses each week (Monday to Sunday), paid as cash with no wagering every Monday, up to $500 a week. Offer valid 60 days. Full T&Cs apply. Please gamble responsibly.

Game availability varies by casino and country.

Themes:

Fruit & classic

Part of the Diamond Mystery series.

Free demo Members

Try Diamond Mystery – 40 Imperial Crown deluxe with play money before deciding whether to play for real. Official Novomatic (Greentube) demos are free for GambGenius members.

Member access — full guide unlocked

How to play Diamond Mystery – 40 Imperial Crown deluxe (members only)

Wins are paid when matching symbols land on an active payline, usually left to right starting from the leftmost reel. Your total stake is spread across the lines, and each line win is the line bet multiplied by the symbol's paytable value.

Diamond Mystery – 40 Imperial Crown deluxe is played on a 5 reels grid with 40 paylines.

Set your stake. Choose your total bet per spin. Wins are paid as multiples of this stake.
Check the paytable. Open the game's info screen to see what each symbol pays and the exact rules for this version.
Spin. Each spin's result is decided by a certified random number generator, independent of previous spins.

The full Diamond Mystery – 40 Imperial Crown deluxe guide: how winnings work, 4 features and 2 strategy tips

Your stake plan: a $50 budget → about $0.25 a spin (medium volatility)
4 features explained: wild symbols, expanding wilds, gamble feature, pick bonus
Stake plans for $20 to $250 budgets, checked against the $0.20 minimum bet
Strategy tips and a session planner for Diamond Mystery – 40 Imperial Crown deluxe

Free · no card · 18+ only

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How winnings work (members only)

How wins are paid and capped

Features explained (members only)

4 features explained: wild symbols, expanding wilds, gamble feature, pick bonus

Wild symbols

Wilds substitute for regular paying symbols to help complete winning combinations. They do not normally replace scatter or bonus symbols.

Expanding wilds

When an expanding wild lands, it grows to cover its whole reel, turning one symbol into a full column of wilds.

Gamble feature

After a win you can risk it on a double-or-nothing guess, such as the colour of a card. It does not improve the game's long-term return.

Pick bonus

A bonus game where you choose from hidden items to reveal cash prizes, multipliers or extra features.

Strategy tips (members only)

Size your stake to the volatility. Medium volatility balances hit rate and win size. Expect dry spells between features, but not extreme swings. A simple rule: bring at least 200 spins' worth of budget, so a $50 budget suggests a stake of about $0.25.

1 more tip and a session planner

Set limits before you spin. Decide your loss limit and session time in advance and stop when you reach either. No pattern or betting system changes the outcome of a spin.

More on this in slot RTP and volatility explained and bankroll management.

Does it fit your budget? (members only)

Stake plans for $20 to $250 budgets, checked against the $0.20 minimum bet

For medium volatility we suggest a budget of at least 200 spins. This is what that means for Diamond Mystery – 40 Imperial Crown deluxe.

Stake plans for Diamond Mystery – 40 Imperial Crown deluxe
Budget	Stake a spin	Bet range	Average cost of 200 spins
$20	$0.10	Below the $0.20 minimum bet	RTP not published
$50	$0.25	Fits	RTP not published
$100	$0.50	Fits	RTP not published
$250	$1.25	Fits	RTP not published

Averages only: a short session can end far above or below them. Set a loss limit before you play.

Questions

Frequently asked questions

Who makes Diamond Mystery – 40 Imperial Crown deluxe?

Diamond Mystery – 40 Imperial Crown deluxe is developed by Novomatic (Greentube) and was released in 2024.

Is Diamond Mystery – 40 Imperial Crown deluxe high volatility?

Diamond Mystery – 40 Imperial Crown deluxe is rated medium volatility. Medium volatility balances hit rate and win size.

Can I play Diamond Mystery – 40 Imperial Crown deluxe for free?

Yes. GambGenius members can play the official Novomatic (Greentube) demo of Diamond Mystery – 40 Imperial Crown deluxe free on this page. It uses play money only, so demo wins can't be withdrawn, and it is for players aged 18 and over.

Does Diamond Mystery – 40 Imperial Crown deluxe have a bonus buy?

No bonus buy is listed for Diamond Mystery – 40 Imperial Crown deluxe in the sources we checked.

Where this data comes from

greentube.com Provider
slotcatalog.com Slot database

Specs come from the provider's own site and 1 independent slot database. Casinos can run lower-RTP versions, so always check the game rules before you play.