Lobbies v1.5.4 · Changelog · Made by a gamer for gamers

Released April 18, 2011 · Valve
Sequel to the acclaimed Portal (2007), Portal 2 pits the protagonist of the original game, Chell, and her new robot friend, Wheatley, against more puzzles conceived by GLaDOS, an A.I. with the sole purpose of testing the Portal Gun's mechanics and taking revenge on Chell for the events of Portal. As a result of several interactions and revelations, Chell once again pushes to escape Aperture Science Labs.
Steam · 468K reviews · 99% positive
IGDB · out of 100
3 people here have this in their library.
The Portal 2 Lobby
Portal 2 - Update
An update has been released for Portal 2: - Security and exploit fixes reported via HackerOne. - Removed an obsolete URL from the Super 8 teaser.
A massive cache of Valve data has reportedly leaked online, appearing to include Portal 2's elusive beta build and a potential weapon from Half-Life 2: Episode 3
massive cache of internal builds from Valve has reportedly leaked online, including beta builds of several classic Valve titles and possible weapons from Half-Life 2 's cancelled third episode... Read more.
Portal 2 just got a Steam Frame compatibility rating, hinting at the VR headset's imminent launch
Valve has already committed to the Steam Frame launch sometime this summer, and a fresh clue has just appeared. Portal 2 just got given its Steam Frame compatibility rating, which shows the classic Valve puzzler is rated as Playable. Read the full story on PCGamesN: Portal 2 just got a Steam Frame…
via Steam