Melon Playground is a sandbox physics simulator where players interact with ragdoll characters and objects in an open environment. Gameplay revolves around placing items, constructing simple machines, and experimenting with the game's physics and weapon systems using intuitive touch controls.

The mobile version is designed for quick, creative sessions. Players can spawn characters, tools, and hazards, then observe the often chaotic and humorous outcomes. There is no defined objective, emphasizing free-form experimentation and discovery.

Content includes various maps, melee and ranged weapons, explosives, and interactive props. The experience is driven by player curiosity to test interactions within the simulated physics world.