The Joker is the game's standard Wild Symbol.

It substitutes for regular paying symbols to help complete combinations across the ten paylines.

There's nothing complicated about it. No multiplier, expansion or additional modifier.

The Joker has one job.

For once, he's taking it surprisingly seriously.

The Joker's Crown is the much more interesting Transforming Wild.

The Crown acts as a Wild itself, but when it appears it also transforms one or two other symbol types into additional Wilds. Apparat Gaming specifically identifies this as the main feature of the original game.

This can work particularly well on such a compact 5x3 grid.

If the selected symbol is already scattered across several positions, one Crown can suddenly create a much larger concentration of Wilds.

It's simple enough to understand immediately but capable of completely changing the result of a spin.

The Wild Transformation is the effect created by Joker's Crown.

Rather than simply dropping one or two additional Wilds onto random positions, the Crown selects entire symbol types and converts their visible instances into Wilds.

That's an important distinction.

A screen containing several otherwise uninteresting fruit symbols can suddenly become considerably more valuable if the Crown chooses that particular fruit for transformation.

Apparently even a reel full of lemons can have a happy ending.

Diamond Treasures is an optional Side Game attached to the main slot.

Players activate an additional Bonus Bet to become eligible for the feature, which can then trigger randomly during play. When it activates, the standard fruit reels give way to a separate treasure chest sequence.

This isn't a conventional Bonus Buy where you're paying a fixed multiple to immediately enter a feature.

The additional wager buys eligibility for Diamond Treasures while continuing to play the main game.

That makes the feature feel more like a separate game running alongside the slot than a normal bonus round.

When Diamond Treasures activates, three Treasure Chests are opened sequentially.

The objective is to reveal Diamonds from all three chests. Successfully doing so progresses the feature into its main prize stage.

There's not much skill or decision making involved here, so I wouldn't describe this as a true Pick Bonus.

It's better classified as a Bonus Reveal.

Its real purpose is suspense.

Three chests.

Three Diamonds required.

And suddenly opening a box becomes considerably more stressful than it has any right to be.

Revealing the required Diamonds activates the Diamond Prize Draw.

This moves onto five number reels, with the resulting digits combining to determine the final prize. Mystery elements can also influence the outcome.

This is easily the most unusual part of the game.

Instead of moving into Free Spins or another Respin round, Joker's Wild Crown effectively changes from a conventional fruit machine into a numerical prize game.

That's a fairly dramatic change of direction for something that started with cherries and watermelons.

Diamond Treasures provides four betting levels, with the available prize potential increasing according to the selected level. The side game itself has been documented at approximately 96.00% RTP.

This gives players some control over how heavily they want to engage with the optional feature.

It's also why I'd keep the Diamond Treasures statistics separate from those of the underlying slot in your database where possible.