Gold of Sirens Bonus Buy Slot by Evoplay

Two sirens guard the reels from either side of a sunken underwater temple, their tails curving along stone pillars while fish drift past in the blue-green deep. A Poseidon figure dominates the splash screen, golden trident in hand, setting the mythological tone. High-pay symbols depict siren portraits - a redhead and a green-haired figure - while jellyfish, shells, and hermit crabs in purple, gold, and crimson fill the lower tier.

Free spins work through a Wild Replace system. At the start of each spin, the game randomly selects one of the four low-paying symbol types and converts every instance of it on the grid into Wild for that spin only. With 8 regular symbols on the paytable, removing one low-pay type and replacing it with Wilds shifts the odds toward the four high-pay sirens. Three Scatters award 8 spins, four give 10, five give 12, and each Scatter during free spins adds one more.

The Hold & Win jackpot game triggers when six or more jackpot symbols land in a single spin. Three respins begin, and every new jackpot symbol resets the counter back to three. Regular jackpot symbols carry random values between 1x and 10x bet, Minor pays 20x, Major pays 50x. Fill all 15 grid positions and the Epic Jackpot adds 3,000x on top of everything collected.

Four bonus buy options sit in the shop: 8, 10, or 12 free spins at 40x, 50x, or 60x total bet, plus a direct jackpot game entry at 34x. The jackpot game purchase is the cheapest option in the store, giving a shot at the 3,000x Epic without waiting for six symbols to align naturally.