The Infamous Portal Question - Tried In Portal 2

The Infamous Portal Question - Tried In Portal 2

The Removed & Lost Easter Eggs of Portal 2

The Anticipation of Portal 2

Portal 2 but the Portals are Balanced

Portal 2 - Time Travel Portal concept (testroom)

Portal 2 with Infinite Portals

Crushed between two portals experiment

The epic and insane portal debate - Part 1

This Portal Mod Wants You Dead

I played PORTAL 2 and it blew my mind! - Full Playthrough + Extras & Secrets

Portal Speedrunners Found An In-Game Aimbot (And It's Not Cheating...)

Portal | Cracks in the System

Game Theory: Portal 2, Does Chell DIE?

The Game Theorists

PORTAL 2 w/ Michael

Portal 2: Paradox's and the 'Hardest test ever'.

Portal 2 - Crushed between Two Portals

Why The NEW PORTAL GAME Is MASSIVE

Danno Cal Drawings

The most underrated testing element in all of Portal 2

"why is he cube??? HOW???" | Perpetual Testing | Portal 2 Community Maps & Mods

Why are most popular Portal 2 maps so bad?