The Gem Master Slot by Betsoft

Start with the one rule that decides the size of your wins here: in the Bonus Respins round, every Customer Multiplier you collect adds to the others, and the combined figure lands on every cash gem at once. Pull a 2x, a 3x and a 5x across the round and you finish on a flat 10x applied to the whole board, not 2x times 3x times 5x on separate symbols. That single addition rule is what turns a screen of modest money gems into something that can brush the 10,000x ceiling.

Getting there takes six or more cash symbols on one spin. Those lock, you get three respins, and the count resets to three again whenever a new cash gem or a multiplier sticks. A board that keeps feeding can run a long while; it only stops when the respins run dry or all twenty positions fill. The cash gems carry printed values, the small ones around a single bet, the fat ones reaching roughly 500x on their own before any multiplier touches them. So the multiplier and the symbol values feed each other, which is the part worth aiming for.

Free Spins run alongside, scatter-triggered, and the count scales with how many scatters drop. Three buys you five spins, four gives seven, five gives nine. If you'd rather not wait, the Buy Feature opens both routes directly, with the respin round priced around 70x and the free-spin tiers running 70x, 100x and 125x for the five, seven and nine-spin versions. There's also a Bet Booster toggle on the right of the reels that nudges your stake up a quarter and raises the odds of hitting a feature at all.

The setting is a stone-walled jeweler's bench, trays of loose stones and gem pouches lining the shelves behind a gold-bordered grid that sits over near-black. The symbols are big faceted cuts, sapphire blue, ruby red, emerald green, plus a loupe, a diamond ring and a crown up top. The two highest icons pay from just two on a line, which keeps the base game ticking while you wait for the cash gems to gather. Volatility leans high, as you'd expect from a money-collect game built around a buyable bonus and stacked multipliers.