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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.
The Windows version of the game is also available for download separately through Valve's content delivery system, Steam, [1] and was released as a standalone retail product on April 9, 2008. [53] In addition to Portal, the Box also included Half-Life 2 and its two add-on episodes, as well as Team Fortress 2.
Genre (s) Puzzle, platformer. Mode (s) Single-player, multiplayer. Portal 2 is a 2011 puzzle platformer video game developed by Valve for Windows, Mac OS X, 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.
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.
[1] Black Mesa - A third-party recreation of Half-Life (1998) that was made in response to the release of Half-Life: Source (2004), a port of the original game to the Source engine. [2] Black Mesa originally released as a free mod in September 2012, and later had a full commercial release on Steam in March 2020. [3] [4]
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.
v. t. e. In the video game industry, digital distribution is the process of delivering video game content as digital information, without the exchange or purchase of new physical media such as ROM cartridges, magnetic storage, optical discs and flash memory cards. This process has existed since the early 1980s, but it was only with network ...
The service is the largest digital distribution platform for PC games, with an estimated 75% of the market share in 2013 according to IHS Screen Digest.[2] By 2017, game purchases through Steam totaled about US$4.3 billion, or at least 18% of global PC game sales according to Steam Spy.[3]