Top 100 Portal 2 Videos With The Longest Duration by GodOfRandomnessTop 100 » 200 » 300 » 400 » 500Video TitleDurationCategoryGame1.NEW PORTAL GAME!!! / Portal: Revolution (Part 1)4:21:05Portal 2 2.Let's do it ALL again!!! / Portal 2 (Part 3)4:01:25Portal 2 3.We're on the MOON AGAIN!!! / Portal: Revolution (Finale)3:51:00Portal 2 4.ADVANCED MODE!!! WHY!?!?!? / Portal Stories: Mel (Part 3)3:27:41Portal 2 5.These PUZZLES are so HARD!!! / Portal Stories: Mel (Part 1)2:50:59Portal 2 6.OH THANK GOD!!! WE DID IT!!! / Portal Stories: Mel (Finale)2:38:51Portal 2 7.BANG!!! ZOOM!!! STRAIGHT TO THE MOON!!! / Portal 2 (Part 2)2:19:19Portal 2 8.AEGIS'S CORE!!! / Portal Stories: Mel (Part 2)2:15:11Portal 2 9.BETRAYAL!!! / Portal 2 (Part 1)1:59:59Portal 2 Top 100 » 200 » 300 » 400 » 500