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Index Story Characters Portals Co-op Robot Enrichment Mechanics Portal Portal Portal: Still Alive Portal 2 Portal 2: Lab Rat Aperture Science Achievements Items Voice lines Mechanics Test Chambers Cubes Turrets Handheld Portal Device Material Emancipation Grill High Energy Pellet Gels Portals Characters Chell GLaDOS Cave Johnson Wheatley Atlas P-body Caroline Hoopy the Hoop Featured article — GLaDOS GLaDOS is the central core designed to control, guide, and oversee the Aperture Enrichment Center. With the ability to shift and move facilities and various chambers, GLaDOS is able to achieve a seamless and almost infinite testing design whilst residing in the Central AI Chamber. Continue reading–Featured article project–Previously featured

Latest updates Latest Portal 2 Patch Latest Blog post: February 5, 2025 (427 days ago) February 18, 2021 (1875 days ago) Latest Authoring Tools patch: April 26, 2023 (1078 days ago) Latest Portal Patch June 27, 2025 (285 days ago) 10 August 2023 – Pine Studio announces Escape Simulator: Portal Escape Chamber, a free DLC for Escape Simulator based on Aperture Science Enrichment Center! Check out the announcement trailer! 21 September 2022 – Nvidia announces Portal with RTX, a visually enhanced version of Portal featuring ray tracing! 28 June 2022 – The previously announced Portal: Companion Collection arrives on the Nintendo Switch! 18 April 2022 – Tag: The Power of Paint, the first-person puzzle game that inspired the Gels mechanic in Portal 2, has been released on Steam! 24 February 2022 – Valve announces Aperture Desk Job, a free playable short for the Steam Deck designed to introduce players to the Steam Deck's controls and features! Update or view past news Did you know… ...that the PC version of Portal 2 includes an interactive trailer for the movie Super 8? ...that Portal 2 was at one point planned as a prequel without Chell, GLaDOS, or portals? ...that the cake is a lie? ...that there were plans for a "reflection gel" in Peer Review? ...that in the Perpetual Testing Initiative video, someone is watching Meet the Pyro instead of building a test chamber? ...that pre-recorded messages of GLaDOS originally took the place of the Announcer's voice lines in the first chapter of Portal 2? ...that Chell was once planned to speak in Portal 2's ending sequence? ...that the Animal King Turret was planned to marry off one of its turrets to Chell?[1] Add a fact–More "Did you know"–Previously featured

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