Portal 2: Confinement is a single-player and multiplayer puzzle platformer game in which players solve a series of 28 challenging co-op puzzles centered around the confinement mechanic, requiring teamwork and strategic thinking. In this game, the storyline revolves around navigating through a series of test chambers within a confined environment, emphasizing puzzle-solving and cooperation to progress. It stands out with its unique focus on the confinement mechanic, advanced puzzle design, and the integration of both single-player and local co-op modes, offering a rich and engaging experience across multiple platforms including Linux, Mac, and PC.