So, The Portal 2 Co-op Campaign is Great
36:34
I Learned How the Events of Portal All Began
57:49
Oh, This is Why People Like Portal 2
31:19
So, Portal Revolution is Basically Portal 3
21:45
Oh, This is Why People Like Portal
55:31
Ok, I See Why People Like Black Mesa
16:57
What if Portals were a Vacuum?
20:25
The Tale of Aperture's Iconic Robotic Duo | ATLAS & P-Body | FULL Portal Lore
22:01