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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.
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.
In the two games there are various "Ratman dens", where Doug Rattmann has left scribblings and paintings on walls in hidden rooms. Ratman’s full appearance is only seen in the Portal 2: Lab Rat webcomic released by Valve prior to Portal 2 ' s release to tie the story of the two games together. Ratman is the comic’s main character.
Cave Johnson is a fictional character from the Portal franchise first introduced in the 2011 video game Portal 2. He is voiced by American actor J. K. Simmons and created in part by Portal 2 ' s designer Erik Wolpaw. He is referenced by a computer username in the first game and appears indirectly in Portal 2.
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Portal is a text-driven adventure with a graphical interface published for the Amiga in 1986 by Activision. [ citation needed ] The writing is by American author Rob Swigart , and it was produced by Brad Fregger.