Gem Trio

Gem Trio is a 3x3, 9-payline retro-styled slot from Pragmatic Play with a 20,000x maximum win — an extreme ceiling for the format. 96.50% RTP, very high (extreme) volatility. The 3x3 grid is the smallest format in the PP high-ceiling range, and the 20,000x cap is a record for a three-by-three slot. Three wild types — green wilds, red wilds, and 3x wilds — land in the base game and free spins, substituting for all symbols except gem scatter symbols.

Free spins trigger via gem-symbol collection rather than a direct scatter spin: emerald, diamond, and ruby gems are collected when they land, and accumulating enough of the right gem triggers the bonus with one of three modifiers. The emerald modifier awards extra spins for every emerald hit during the round. The diamond modifier unlocks four prize symbols worth up to 10,000x. The ruby modifier adds a second 3x3 grid for the duration of the bonus, doubling the playing surface.

The ruby modifier — a bonus 3x3 grid — is the 20,000x route. With both grids active and a 3x wild contributing to paylines across the double surface, the cumulative win potential climbs above anything achievable on a single 3x3 format. The 27.85% base-game hit frequency keeps sessions from pure stagnation between gem collection cycles, which run roughly every 94 spins on average.

Very high volatility on a 3x3 grid is more extreme in practice than on a 6x5 grid — fewer symbols per spin means longer cold sequences. The collection-based trigger adds unpredictability: gem accumulation can stall for extended periods or fire quickly depending on which gem types land. The 96.50% RTP is honest at this ceiling. The 3x3 format suits mobile play where a minimal grid is preferred.

Verdict
A 20,000x ceiling on a 3x3 grid via a dual-grid ruby modifier. The most extreme ceiling-to-format ratio in the PP catalog. Respect the volatility.