Ka Ching Boom Slot by Playtech

Here's the oddity that runs this one: nothing pays on a picture. Three number reels sit side by side, and whatever digits land read straight across as a single figure. A 3, a 2 and a 0 aren't three symbols, they're "320", and that number times your coin value is the win. A Diamond or an empty gap in the run just gets skipped, so it never breaks the sequence. Reel 1 shows 1, 2, 5 or 10; reels 2 and 3 fold a 0 into the mix.

The fourth reel is where the boosts live. It lands a x2, x3 or x5 that multiplies whatever the numbers spelled out, or a Respin symbol that locks itself in place and spins the first three reels again for a guaranteed win, or a Wheel symbol that fires the gold prize wheel mounted above the cabinet.

What the machine can actually do depends on how much you stake. The lowest bet keeps reel 3 locked and cuts the wheel out completely. Step up and that third reel unlocks and the wheel comes into play, its slices running from 50x to 2,500x. Push to the top option and the whole thing changes character: a x10 joins the multiplier reel, bigger numbers (10 and 00) start appearing, and the wheel slices climb to 20,000x, the largest figure this game can hand you. So raising the bet literally levels up the hardware.

The look is old-money casino. A deep emerald damask backdrop laced with gold filigree, a heavy gilded machine dead center, red-and-gold digits turning behind ornate scrollwork. It plays high volatility, and with no bonus buy anywhere, the only way to that top wheel slice is to keep the reels spinning.