https://matrix.fandom.com/wiki/Portal
https://www.reddit.com/r/matrix/comments/1fntk2g/remember_that_scene_in_reloaded_where_seraph
Outside Aperture - Portal Short Film https://www.youtube.com/watch?v=NorZUFfpvC0
Portal: Survive! https://www.youtube.com/watch?v=0x2l0NgSvyM
Portal: No Escape (Live Action Short Film by Dan Trachtenberg) https://www.youtube.com/watch?v=4drucg1A6Xk
Portals