Portal 2

The game features the silent protagonist Chell, who is guided and menaced by the acerbic artificial intelligence GLaDOS. The single-player campaign introduces Wheatley, a bumbling personality core voiced by Stephen Merchant. The separate co-op mode features two robotic characters named Atlas and P-Body.

Players use a portal gun to create two linked portals on flat surfaces to navigate puzzle chambers. The sequel introduces new mechanics like gels that alter physics, such as the Propulsion Gel and Repulsion Gel. Players must use these tools to redirect lasers, bridges, and their own momentum.

Yes, Portal 2 includes a completely separate two-player cooperative campaign. Players control the robots Atlas and P-Body, each armed with their own portal gun. Many puzzles require synchronized actions and precise timing between the two players to solve.

Developed by Valve, the game was released in 2011 for Windows, Mac OS X, Linux, PlayStation 3, and Xbox 360. The PlayStation 3 version was notably bundled with Steam functionality, a first for consoles at the time. It is also available on the Nintendo Switch as part of the Portal: Companion Collection.