Baba Is You is a puzzle game by Hempuli Oy. The game features manipulation of the game rules in the form of programming. Players control a white, sheep-like creature. It represents the game rules as interactive blocks that players can move from one rule to another rule. Moving the blocks alters the behavior of some of the game objectives. Among these changes include transforming into a game object, passing through walls, passing through walls, changing the walls into playable objects, and traversing hazards. Baba is You's unique game mechanics allows users to repurpose objects and create mind-blowing results that can surprise them.