King of the Pig Slot by BigPot Gaming

Any high symbol landing directly above, below, left, or right of a Wild transforms into a Creation Wild - an expanding wild copy that stays locked while a free re-spin fires. If the re-spin drops another high symbol next to any Wild already on the grid, that one converts too, and the re-spins keep going. The chain only breaks when a spin produces no new conversions, at which point every Creation Wild that didn't expand further gets stripped off the reels. So the entire mechanic hinges on adjacency. One Wild in the center of the grid has four neighbors; one in a corner has two. Position matters more than frequency here.

Stone dungeon walls and tall Gothic arched windows glow blue from moonlight on the left side while a fireplace crackles in the upper right corner. Candles drip wax at the base of the reels. The Pig King himself is the Wild - a red-skinned boar in gold crown and armor, hunched and snarling. His court's treasures fill the high-pay positions: slabs of cured ham, a whole roasted turkey, gold coins stamped with a pig face, silver coins bearing a skull. Card royals are built from sticks and animal bones lashed together, which is a nice touch that keeps even the low symbols inside the theme. The spin button is a red wax seal pressed into the bottom-right corner.

No free spins, no bonus buy, no jackpot. The Creation Wild re-spin loop is the only feature, and the 20-payline structure keeps things tight. Holy Knight from the same provider puts all its weight on a single Walking Wild mechanic in a similar medieval setting - King of the Pig does something comparable but confines it entirely to the base game, with no separate bonus round at all. Everything rides on where that first Wild lands and whether the re-spin chain finds adjacent high symbols before it stalls.