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  2. 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.

  3. Portal (video game) - Wikipedia

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

    Portal is a 2007 puzzle-platform game developed and published by Valve.It was originally 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.

  4. Valve Corporation - Wikipedia

    en.wikipedia.org/wiki/Valve_Corporation

    Valve Corporation, also known as Valve Software, is an American video game developer, publisher, and digital distribution company headquartered in Bellevue, Washington.It is the developer of the software distribution platform Steam and the game franchises Half-Life, Counter-Strike, Portal, Day of Defeat, Team Fortress, Left 4 Dead and Dota.

  5. Thinking with Time Machine - Wikipedia

    en.wikipedia.org/wiki/Thinking_with_Time_Machine

    Thinking with Time Machine is a 2014 modification for Portal 2 developed by Ruslan "Stridemann" Rybka and published by SignHead Studio. The player controls Chell, the protagonist of the Portal series, who wields the portal gun, while the gameplay revolves around the concept of a tablet-like time machine that is also controlled by the player.

  6. Portal 2 - Wikipedia

    en.wikipedia.org/wiki/Portal_2

    Portal 2 is a 2011 puzzle-platform game developed by Valve for Windows, macOS, Linux, PlayStation 3, and Xbox 360.The digital PC versions are distributed online by Valve's Steam service, while all retail editions are distributed by Electronic Arts.

  7. Steam (service) - Wikipedia

    en.wikipedia.org/wiki/Steam_(service)

    Steam is a digital distribution service and storefront developed by Valve Corporation.It was launched as a software client in September 2003 to provide game updates automatically for Valve's games and expanded to distributing third-party titles in late 2005.

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  9. List of Valve games - Wikipedia

    en.wikipedia.org/wiki/List_of_Valve_games

    Valve's logo. 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.