Portal is a first-person puzzle game. Players must solve physical challenges by opening portals to maneuver objects, and themselves, through the enigmatic Aperture Science Laboratories.
There are a very early version of the portal textures. Circa 2004.
I modified the portals to be rectangular, then I applied the 2004 textures to them. I don't know how to remove the opening animation. I tried everything I could think of. I'm still relatively new at this, so if you know what to do, PLEASE help me!