3 Supercharged Diamonds: Hold and Win Slot by Playson

Nine cells. That's the whole bonus arena - a tight 3x3 grid where the GRAND jackpot lights up only when all nine positions fill with Diamonds. Most Hold and Win games give you 15 or 20 cells to chase. Playson has stripped the surface area down and stacked three modifier Diamonds on top to compensate, and the math gets weird in a hurry once those Diamonds start firing.

The green Expand Diamond stretches across surrounding positions, eating empty cells and turning them into more collection points. The yellow Multi Diamond carries a multiplier from x2 all the way up to x32, applied to the cash values of nearby Diamonds when the round resolves. The purple Stepper Diamond shifts across the grid as the bonus continues, hitting fresh positions instead of staying locked in place. Land all three together and a single Multi can torch a Stepper's path through Expand-cleared territory, which is where the 15,000x ceiling comes from. Without that interaction the bonus tops out far lower.

Trigger is the standard 6+ Diamond cash-collect symbols dropping in one base spin. From there you get three respins, refreshed every time a new Diamond lands, and the round ends when the counter zeros out or the grid fills. Four jackpot tiers sit in a stack to the left of the reels - jackpots at 15x (MINI), 30x (MINOR), 100x (MAJOR), and the 1,000x GRAND that pays only for a full nine-cell collection. The base game is almost an afterthought: 5 paylines on a 3x3 grid, card-suit royals, golden dice, red 7s, and the white cash Diamonds that double as the bonus trigger. Three horizontals and two diagonals cover every line possible on this layout. Playson hasn't tried to dress it up with extra mechanics because they don't need to.

A red BONUS cart sits below the jackpot stack for direct entry, with two purchase tiers exposed in the configuration - presumably one cheaper trigger-only option and a pricier guaranteed-feature variant, though the demo doesn't print the prices. Visually the cabinet is dipped in molten orange and electric yellow, with lightning bolts arcing out from behind the reels against pure black. The three giant feature Diamonds glow above the grid in green, amber, and violet like they're being charged from below. It's the same Hold and Win 3x3 series template Playson has been running for years, just with the Feature Diamond count baked into the title - 3 here, 4 in the Clovers entry that launched a couple of months earlier.