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  2. Portal 2 - Wikipedia

    en.wikipedia.org/wiki/Portal_2

    Portal 2 is a 2011 puzzle-platform game developed by Valve for Windows, Mac OS X, Linux, PlayStation 3, and Xbox 360. The digital PC version is distributed online by Valve's Steam service, while all retail editions were distributed by Electronic Arts. A port for the Nintendo Switch was included as part of Portal: Companion Collection .

  3. Portal (video game) - Wikipedia

    en.wikipedia.org/wiki/Portal_(video_game)

    Single-player. Portal is a 2007 puzzle - platform game developed and published by Valve. It was released in a bundle, The Orange Box, for Windows, Xbox 360 and PlayStation 3, and has been since ported to other systems, including Mac OS X, Linux, Android (via Nvidia Shield ), and Nintendo Switch . Portal consists primarily of a series of puzzles ...

  4. Portal (series) - Wikipedia

    en.wikipedia.org/wiki/Portal_(series)

    Portal is a series of first-person puzzle-platform video games developed by Valve.Set in the Half-Life universe, the two main games in the series, Portal (2007) and Portal 2 (2011), center on a woman, Chell, forced to undergo a series of tests within the Aperture Science Enrichment Center by a malicious artificial intelligence, GLaDOS, that controls the facility.

  5. List of Portal characters - Wikipedia

    en.wikipedia.org/wiki/List_of_Portal_characters

    Michael Avon Oeming (young appearance) (Portal 2: Lab Rat) Andrea Wicklund (older appearance) (Portal 2: Lab Rat) Voiced by. Unknown (vocalizations in some music tracks) Doug Rattmann, often referred to as the " Ratman" is a character in both Portal and Portal 2. He was a former scientist working at Aperture and one of the few who survived when ...

  6. Weighted Companion Cube - Wikipedia

    en.wikipedia.org/wiki/Weighted_Companion_Cube

    The Weighted Companion Cube (also simply called the Companion Cube) is an item featured in the Portal series of video games by Valve Corporation.Initially featured in a single level of the original Portal, Test Chamber 17, as one of Aperture Science's ubiquitous Weighted Storage Cubes with heart symbols printed on the outside, it is given to the game's main character, Chell, as part of the ...

  7. Portal-maker Valve cryptically announces free-to-play game - AOL

    www.aol.com/2011/06/20/portal-valve-free-play-game

    It's only been just over a week since Valve brought five fancy free-to-play games to Steam, its digital games distribution service. And already the developer slash online marketplace curator has ...

  8. List of Valve games - Wikipedia

    en.wikipedia.org/wiki/List_of_Valve_games

    List of Valve games. Valve is an American video game developer and publisher founded in 1996 by Gabe Newell and Mike Harrington. The company is based in Bellevue, Washington. [1] Valve's first game was Half-Life, a first-person shooter released in 1998. [2] It sold over nine million retail copies.

  9. Valve guide - Wikipedia

    en.wikipedia.org/wiki/Valve_guide

    Valve guide. Valve guides are cylindrical metal bushes, pressed or integrally cast into the cylinder head of most types of reciprocating engines, to support the poppet valves so that they may make proper contact with its valve seat. Along with a corresponding valve spring, they are one component of an engine’s valve train.