Diamond Mystery – 40 Imperial Crown Slot

Diamond Mystery – 40 Imperial Crown

Volatility

Medium

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

Key specs

Volatility: Medium
Grid: 5 reels
Pays: 40 paylines

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

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Game availability varies by casino and country.

Themes:

Fruit & classic

Part of the Diamond Mystery series.

Member access — full guide unlocked

How to play Diamond Mystery – 40 Imperial Crown (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 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 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
Strategy tips and a session planner for Diamond Mystery – 40 Imperial Crown

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

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

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