Portal 2 - Trailer - Portal 2

Released in 2011, this main game is a first-person Puzzle-Platformer Adventure where you play as Chell, navigating the decaying Aperture Science Labs using a Portal Gun to create linked spatial rifts. The core loop involves solving physics-based environmental puzzles by manipulating momentum and trajectory across increasingly complex test chambers designed by the AI GLaDOS. A distinctive feature is the separate, dedicated cooperative campaign requiring two players to coordinate four portals simultaneously to overcome unique challenges.