Gold of Sirens Slot by Evoplay

Four siren characters in different hues - silver-haired, dark, purple, and auburn - serve as the high-pay symbols, while jellyfish, octopus, fish, and nautilus fill the low-pay slots. Stone mermaid statues flank the reels on both sides, and the background fades into a deep blue underwater ruin lit by scattered bioluminescence. A three-tier jackpot meter sits above the grid: Minor at 20x bet, Major at 50x, and Epic at 3,000x.

The free spins trigger works the usual way - three to five Scatters award 8, 10, or 12 spins. But the twist is what happens during those spins. Each free spin, the game randomly picks one of the four low-pay symbol types that landed on the reels and converts every instance of it into a Wild. So a grid loaded with jellyfish might suddenly become a grid loaded with Wilds, and that conversion happens fresh on every single spin. During free spins, each additional Scatter that appears adds one more spin rather than requiring three for a full retrigger.

The Hold and Win jackpot game triggers when six or more coin symbols land in one spin. Three respins start, coins stick in place, and any new coin resets the counter back to three. Coins carry random values between 1x and 10x your bet, with Minor and Major coins worth 20x and 50x. Fill all 15 grid positions and the Epic Jackpot pays an additional 3,000x on top of every coin value. The jackpot game runs independently from the underwater base game, so it can trigger during any regular spin, stacking its payout onto whatever line wins started the round.