Portal - Taking the Companion Cube to the End

Portal - Taking the Companion Cube to the End

Portal: Still Alive - Test Chamber 17 Reach Chamber Lock Puzzle Solution: Weighted Companion Cube

Companion Cube - DIY

OpenGate Portal 2 Companion cube Edition: FACE REVEAL (Back To The Basics)

Let's check out Portal & Portal 2 ON THE SWITCH! - Portal: Companion Collection

Saving the Companion Cube

The Companion Cubes Return #3 (Portal 2)

Sacrificing The Companion Cube - Portal

Portal - Taking the Companion Cube to the End