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	Portal: A History of Aperture (Timeline and Lore) (Skyrionn) View
	The History of Portal (Tyler McVicker) View
	Portal 2: The history of Portal (EA Benelux) View
	Portal 2's Educational Version - An Obscure Part of Valve's History (Ossy Flawol) View
	The Crazy Story of Portal 2's Early Release (Casperr) View
	Portal's Darkest Secrets (Creepy Portal Easter Eggs u0026 Facts) (SuperHorrorBro) View
	Portal: The Lore Behind GLaDOS (Skyrionn) View
	Game Theory: Portal 2, Does Chell DIE (The Game Theorists) View
	The Story of Portal 2 in 5 Minutes (TimmyBoots) View
	How Are the Portal and Half-life Games Connected (Elephants Doing Crack) View