Top 100 Portal 2 Videos With The Longest Duration by CANNONLOWYTop 100 » 200 » 300 » 400 » 500Video TitleDurationCategoryGame1.Let's Play Portal 2 Co-op W/ MCplayer321 (BL Pt 4) Excursion Funnel Tests57:04Portal 2 2.Let's Play Portal 2 Co-op W/ MCplayer321 (BL Pt 3) Hard Light Surfaces Tests44:44Portal 2 3.Let's Play Portal 2 Co-op W/ MCplayer321 (Pt 2) Mass and Velocity Tests33:26Portal 2 4.Let's Play Portal 2 Co-op W/ MCplayer321 (BL Pt 7) Freeing The Humans Finale30:36Portal 2 5.Let's Play Portal 2 Co-op W/ MCplayer321 (BL Pt 6) Red Slippery Gel Section23:04Portal 2 6.Let's Play Portal 2 Co-op W/ MCplayer321 (BL Pt 5) Mobility Gels First Section20:56Portal 2 7.Let's Play Portal 2 Co-op W/ MCplayer321 (Pt 1) Team Building Tests16:43Portal 2 Top 100 » 200 » 300 » 400 » 500