Portal 2

Portal 2 is a sequel to Portal. It offers first-person puzzle-platform gameplay. Players control Chell, who defeated GLaDOS in the first game. It takes place in decayed and overgrown Aperture Science Labs. The gameplay revolves around portals. Players can shoot portals to bridge gaps. Test chambers require solving puzzles with cubes, turrets, and platforms. GLaDOS returns, but her role changes. Chell gets help from Wheatley, a small robot. New elements include light bridges, laser redirection, and gels that provide special effects. The game adds a two-player cooperative mode and a separate campaign with new characters. The PlayStation 3 version allows cross-platform play with PC players.