Boilin' Pots Slot by Yggdrasil Gaming

The green ARROW symbol drives the entire engine, and there is one quirk in its rule worth flagging before anything else. Each arrow that lands adds one row to the visible grid, growing the cabinet from 5x3 toward a maximum of 5x7. Standard expanding grid behaviour. The catch is that an arrow which lands on a freshly created row will add another row on top of that one, and so on, so a single spin can leapfrog through three or four expansions if the arrows keep dropping into newly opened space. Ways scale with the height: 5x3 = 243, 5x4 = 1,024, 5x5 = 3,125, 5x6 = 7,776, 5x7 = 16,807. The arrow vanishes from the symbol pool the moment 5x7 is reached.

Land four arrows in a single spin and the grid snaps to 5x7 with Wild Respins kicking off. Stacked Wilds up to three high drop onto the reels, and the round keeps respinning as long as each respin produces any winning combination. A single dead respin ends the chain. Lives reset on every win, which is the usual Yggdrasil cascade-respin discipline, but here it sits on top of a guaranteed 16,807-way grid so even small completed combos can extend the round meaningfully.

Three or more BONUS scatters trigger the Bonus Game, played on a dedicated 5x7 board with a single payline running across the middle row. Prize symbols land each spin and only those touching the payline pay out, in tiers ranging from 1x to 5,000x bet. You start with three lives. A spin where nothing lands on the payline costs one life, any winning spin restores the count to three. Round ends at zero. Triggering with four scatters adds 10x bet on top, five scatters adds 100x. Those scatter kickers tie to organic landings only, so the Buy Bonus entry at 49.5x bet does not award them.

The reel set sits inside a giant cast-iron cauldron with green-glowing brew bubbling at the rim and an orange flame ring underneath. A spectral raven with red eyes watches from the right of a misty forest backdrop, yellow eyes peer from the foreground bushes, and the grid physically grows upward inside the pot as arrows land. Card-rank lows are replaced by potion bottles, blue claw hands, red bat wings and green leafy mandrakes, with painterly Halloween folk-tale art that leans dark blue and toxic green throughout.