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	Behind the scenes of portal 2 stuff (lisdexic_eddie) View
	Off Camera Secrets \| Portal 2 - Boundary Break (Shesez) View
	Recording Meet The Cores 3 \| Behind The Scenes (Harry101UK) View
	Portal 2's Cut Content (Exclusive) (DidYouKnowGaming) View
	Portal 2: The Twist: Behind the Scenes! Custom elements explained. (Bisqwit) View
	The making of Portal (sensivision) View
	Unheard Portal Voice Files - How Valve Directs Voice Actors (Tyler McVicker) View
	A Portal 2 adventure (Behind the Scenes of The lab (aidenmu2) View
	Game Theory: Portal 2, Does Chell DIE (The Game Theorists) View
	Portal 2 - How to Make Great Test Chambers - Episode 1 (Demon Arisen) View