Mask Masters: Joker Edition is a 2D hyper-casual merging game where items fall from the top of the screen and players merge matching pieces to craft a fully assembled Joker mask. Each merge upgrades the item, and specific crafted pieces are pulled into the mask assembly slots. The game progresses through multiple requirement phases, clearing the board and shifting the spawn pool as the player completes each part of the mask. The system includes ScriptableObject based items, spawn pools, shape-based merge detection, and DOTween-driven animations for merging, collecting, and UI transitions.