Top 100 Portal 2 Videos With The Longest Duration by MercaderGamingTop 100 » 200 » 300 » 400 » 500Video TitleDurationCategoryGame1.Merc Derps Around... WITH PORTALS! - Portal 2 Gameplay/Commentary4:03Portal 2 2.Merc Derps Around... WITH PORTALS! 4 - Portal 2 Gameplay/Commentary2:41Portal 2 3.Merc Derps Around... WITH PORTALS! 3 - Portal 2 Gameplay/Commentary2:31Portal 2 4.Merc Derps Around... WITH PORTALS! 2 - Portal 2 Gameplay/Commentary2:08Portal 2 Top 100 » 200 » 300 » 400 » 500