GDC 2015: How Valve's Portal VR Demo Sold Me on Vive
Valve needs to make Portal 3 soon, writer says | Eurogamer.net
.jpg/BROK/resize/1920x1920%3E/format/jpg/quality/80/portal-rtx-(4).jpg "Portal 3 will have a \"pretty awesome starting point,\" if it ever gets made | VG247")
Portal 3 will have a "pretty awesome starting point," if it ever gets made | VG247
Portal writer says people at Valve like his "pretty awesome" idea for Portal 3 | Rock Paper Shotgun
Portal Co-Writer wants Valve to let him do a third Portal game - Xfire
Valve Mentions Portal 3 In Their New Game - Aperture Desk Job : r/Steam
Portal Reloaded is the closest we're likely to get to Portal 3 | PC Gamer
Erik Wolpaw to Valve on Portal 3 — 'we should just do it' | GamingOnLinux
Portal writer says he wants to start Portal 3 because he's 'not getting any younger' | VGC
I Made Portal 3 Because Valve Wouldn't - YouTube
Can Valve's First “3” Be Portal 3? | Gameverse
Portal 3 has a "pretty awesome starting point" | Eurogamer.net
Valve made a bite-sized new Portal game for the Steam Deck - The Verge
Half-Life and Portal series writer wants Valve to start making Portal 3 | KitGuru
Portal writer would like to make Portal 3 now, please
Portal Writer Urges Valve to Make Portal 3
Portal 3 | Video Game Fanon Wiki | Fandom
Portal 3 will have a "pretty awesome starting point," if it ever gets made | VG247
Voice of GLaDOS urges fans to "email Valve" asking for 'Portal 3'
Portal 3 has “my blessing” says GLaDOS, telling fans to email Valve | PCGamesN
Portal 2 on Steam
Portal 3 Gameplay Has an Obvious Direction to Go
It's no 'Portal' sequel, but Valve dropped a trailer for a 'Portal'-adjacent Steam Deck freebie | Mashable
