Portal 2 delayed to April 20, 2011 as final release date - Video Games Blogger
Portal 2 - Wikipedia
Portal 2 release date: April 21 | GameWatcher
Portal 2 release date and gameplay highlights
Portal 2 on Steam
Amazon.com: Portal 2 - PC : Video Games
Portal 2 on Steam
Portal 2 Sixense Perceptual Pack - release date, videos, screenshots, reviews on RAWG
Portal and Portal 2 Are Coming To Nintendo Switch In New Collection
Valve: Portal 2 is our best game ever – Destructoid
Portal 2 - Wikipedia
Portal 2 on Steam
Portal 2 on Steam
Portal 2 - Keep Track of My Games
Portal 2 (Video Game 2011) - IMDb
Portal and Portal 2 are coming to Switch in one collection | VG247
/cdn.vox-cdn.com/uploads/chorus_asset/file/13668277/screenshot_8.jpg "Portal and Portal 2 coming to Nintendo Switch - Polygon")
Portal and Portal 2 coming to Nintendo Switch - Polygon
Portal 2: celebrating 10 years without a sequel | TheSixthAxis
New Amusing Portal 2 Trailer Released
Portal 2 on Steam
GLaDOS is back for revenge in 'Portal 2' | The Blade
Portal 2' now available for PC, Xbox 360, PS3 | Digital Trends
Portal 2 fans hard at work making unofficial sequel - Checkpoint
