Portal 2 ~Chapter 2: The Cold Boot~ Part 2
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Portal 2 is a 2011 first-person puzzle-platform video game developed and published by Valve Corporation. It is the sequel to Portal (2007).
Developer(s): Valve Corporation
Publisher(s): Valve Corporation
Director(s): Joshua Weier
Producer(s): Gabe Newell
Artist(s): Jeremy Bennett, Randy Lundeen
Writer(s): Erik Wolpaw, Jay Pinkerton, Chet Faliszek
Composer(s): Mike Morasky
Series: Portal
Platform(s): Microsoft Windows, OS X, Linux, PlayStation 3, Xbox 360
Release Date(s): April 19 2011
Genre(s): Puzzle-platform game
Language: English
Played on PC (Steam Version)
Portal 2 is a first-person perspective puzzle game. Players take the role of Chell in the single-player campaign, as one of two robots—Atlas and P-Body—in the cooperative campaign, or as a simplistic humanoid icon in community-developed puzzles. These four characters can explore and interact with the environment. Characters can withstand limited damage but will die after sustained injury. There is no penalty for falling onto a solid surface, but falling into bottomless pits or toxic pools kills the player character immediately. When Chell dies in the single-player game, the game restarts from a recent checkpoint; in the cooperative game, the robot respawns shortly afterwards without restarting the puzzle. The goal of both campaigns is to explore the Aperture Science Laboratory—a complicated, malleable mechanized maze. While most of the game takes place in modular test chambers with clearly defined entrances and exits, other parts occur in behind-the-scenes areas where the objectives are less clear.
The Portal series takes place in the Half-Life universe. The events in Portal take place between the first and second Half-Life games; while Portal 2 is set "a long time after" the events in Portal and Half-Life 2.
Before Portal, Aperture Science conducted experiments to determine whether human subjects could safely navigate dangerous "test chambers", until the artificial intelligence GLaDOS, governing the laboratory, killed its employees. At the end of the first game the protagonist Chell destroys GLaDOS and momentarily escapes the facility, but is dragged back inside by an unseen figure later identified by writer Erik Wolpaw as the "Party Escort Bot". A promotional comic shows estranged Aperture Science employee Doug Rattmann, who used graffiti to guide the player in Portal, placing Chell into suspended animation to save her life, until the beginning of Portal 2.