Valve have issued a statement to Australian Steam users
Valve were told that Portal would only appeal to “female gamers”
See Portal completed without using the mouse to look around
An AR developer brings Portal to your living room via HoloLens
Assistant professor at the University of Maine codes the original Portal for the Apple II
Why videogames aren’t funny
Portal’s development history, betas and big changes over time explored in new video
Valve’s showing off SteamVR with a Portal demo
