Portal - Taking the Companion Cube to the End

The Secret Portal Test Chamber

Companion Cube - DIY

Companion Cube: A Portal Love Song

Portal with RTX · PC · 4K 60ᶠᵖˢ

Portal 2: Hidden Companion Cube in co-op

Portal - Saving the companion cube with no cheats!

Portal- Weighted Companion Cube

Sacrificing The Companion Cube - Portal

Portal walkthrough - GLaDOS' Chamber

Companion Cube: A Man's Best Friend - Portal: Revolution (4)

Companion Cube Incineration is a Canon Event (Portal Mod)