Medusa II Slot by PG Soft

Before free spins even become available, there's work to do. Soul Stones drop through the Stone Reel Feature or the Pots Selection pick, and you need three of them to unlock the bonus. A Blue Meter above the grid tracks how many spins remain before your collected stones reset to zero - Blue Potions extend that window by 3 spins each, so the collection phase is a race against a shrinking timer. Medusa herself can appear during base game to destroy a stone on a losing spin, but if weapon symbols (helmet, shield, torch, mace, dagger) land in a winning combination when she shows up, Perseus attacks her instead and you gain a stone. That tug-of-war over soul stone collection gives the base game a layer of tension that most scatter-triggered bonuses skip entirely.

The free spins round is built around an 800 HP boss fight. Perseus swings at Medusa for a flat 40 HP every spin, but weapon symbol wins deal extra damage based on their paytable value multiplied by a scaling variable that increases after spins 3, 6, and 8. So early spins chip away slowly while later spins with the same winning symbols hit harder. Wilds add a second dimension - when one lands, Medusa turns that reel to stone. It holds for the next spin, then transforms into a full Stacked Wild column that stays locked for three spins. Multiple Wilds on a single spin means multiple held reels, which means multiple stacked columns feeding wins across consecutive spins while you're still draining HP.

Drain all 800 HP within the initial 10 spins and Medusa falls, awarding 5 extra spins with a different mechanic. Perseus spins his shield each spin to scatter 1, 2, 3, 5, 7, or 9 random Wilds across reels 2 through 4. Dark stone temple ruins sit behind the grid, blue-gray pillars on either side, and every symbol is a piece of Perseus's arsenal - golden shields with ornate engravings, spiked maces, curved daggers, a flaming torch. The whole palette stays in cold blues and tarnished golds against near-black backgrounds. PG Soft's sequel to the original Medusa, and the HP battle is the clear mechanical upgrade over the first game.