Harpoon Heist Slot by Light & Wonder

Behind the 5x3 reels sits the upper deck of a cartoon pirate ship: red sails half-furled, a brass-mounted harpoon gun bolted to the planks, and a crocodile captain in a tricorn hat squinting through a spyglass next to his pink-shirted hippo crewmate. Open ocean stretches to the left, palm-tree shoreline and rope-strung pier to the right. The wooden reel surround is built from old ship timber with iron rivets at the corners. Friendly anthropomorphic crew, ten paylines, max bet capped at $20 - low for a Light & Wonder release.

The harpoon gun behind the reels is not decoration. On any base spin it may fire at random and deposit up to seven Treasure symbols (Bronze Bag, Silver Pot, Gold Chest) across the array, each carrying a cash multiplier that pays out instantly. That's the entire base-game bonus loop alongside the standard 10-line pays. Three, four, or five pirate-skull medallions land 6, 8, or 10 free spins respectively, and the Bonus symbol then disappears - retriggers only happen through Treasure values inside the round.

Free Spins is where the math actually opens up. Every Wild that lands becomes a Walking Wild, and the free-spin counter locks the moment one appears. Each respin a wave shoves every Walking Wild one reel to the LEFT, and only one new Walking Wild can land per respin. When a Walking Wild touches down on a reel, that reel's multiplier ticks up by +1. Multipliers stay live until the respin chain ends, then reset.

The Treasure collect is what stacks the wins. Any Treasure sitting adjacent or diagonally adjacent to a Walking Wild gets pulled in for its value - cash or +1 free spin. Two Walking Wilds adjacent to the same Treasure both collect it. And if the Treasure itself lands on a reel that already carries a multiplier, its award is multiplied first. A +1 FS Treasure on a 5x reel pays out as +5 free spins. The same logic snowballs cash collects, which is how a game with such a quiet base loop reaches 10,000x.

No buy bonus, no jackpot tiers, no ante bet - the entire engine runs on those left-walking wilds and the pirate-themed treasure chain they drag through the grid.