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  2. 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 ...

  3. 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.

  4. Portal 2 - Wikipedia

    en.wikipedia.org/wiki/Portal_2

    Single-player, multiplayer. 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 ...

  5. Digital distribution of video games - Wikipedia

    en.wikipedia.org/wiki/Digital_distribution_of...

    By 2011, Steam has approximately 50-70% of the market for downloadable PC games, with a userbase of about 40 million accounts. [17] [18] [19] In 2008, the website gog.com (formerly called Good Old Games) was started, specialized in the distribution of older, classic PC games.

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    mail.aol.com

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  8. Portal Reloaded - Wikipedia

    en.wikipedia.org/wiki/Portal_Reloaded

    Release. April 19, 2021. Genre (s) Puzzle-platform. Mode (s) Single-player, multiplayer. Portal Reloaded is a 2021 mod for the 2011 puzzle-platform game Portal 2, developed and published by Jannis Brinkman. As in the official Portal series, gameplay involves solving puzzles by manipulating portals, which allow the player to move through chambers.

  9. Male. Female. Continue. NEW: This symptom checker now includes the ability to select symptoms by body location. We hope this makes it easier for you to identify your symptoms and possible conditions. The tool also allows you to select multiple symptoms quickly. Click to see FAQs and tips for searching. Tell Us What You Think.