Set hundreds of years after the original, Portal 2 drops you back into the overgrown ruins of Aperture Science, where the ever-menacing GLaDOS is waiting. The single-player campaign introduces new dynamic characters, a much larger arsenal of physics-based puzzle elements, and test chambers far more elaborate than anything in the first game.
A full two-player co-op campaign runs alongside the story mode, with its own characters, chambers, and portal mechanics that force players to think and act together. This copy is complete in box and in very good condition.
