Gem Trio

Nine lines and a 3x3 reel set are all Gem Trio needs to pay out to 20,000 times the stake, an unusually wide swing for such a compact grid. Only three-symbol lines count, and Pragmatic Play fills that tiny paytable with nothing but bars and sevens, a deliberately old-fashioned set that trades variety for a fast, simple read on every spin.

Three collectible gems — Emerald, Diamond and Ruby — sit apart from the paying symbols and stack up in a meter above the reels whenever they land, whether or not that spin produced a win. Once the meter fills, a ten-spin round begins with a random mix of the three modifiers already switched on, sometimes just one of them, sometimes all three at once. Emeralds add one or two spins each time one lands during the round; diamonds work toward four-of-a-kind bonus prizes worth 20x, 50x, 300x or 10,000x; and rubies double the playing field itself, running the free spins across two 3x3 grids side by side, each with its own full set of ten spins.

Base-game wins lean on three wild variants instead of the gems: a green one, a red one, and a stronger 3x version. Landing a line of the green pays 50x, the red steps that up to 125x, and the 3x wild alone returns 250x while also tripling any ordinary win it forms part of. Any mix of three wilds together, regardless of colour, returns a flat 15x.

For players who would rather buy in than collect, a feature-buy menu prices three tiers at 50x, 100x and 200x the stake, each unlocking the free spins with an extra modifier switched on already. The top RTP is 96.5%, dropping to 95.49% or 94.50% on the alternate configurations, and hit frequency lands around once in every 3.59 spins. Betting runs from 0.10 to 250 a spin at a high volatility setting.