Top 100 Portal 2 Videos With The Most Comments by BoosterTop 100 » 200 » 300 » 400 » 500Video TitleCommentsCategoryGame1.Glados EVIL or GOOD?! Trapped In A Secret Underground Aperture Science Facility - Portal 2 FULL GAME2Portal 2 2.LIVE | NEW PORTAL: REVOLUTION Gameplay - ENDING - Over 40 new puzzles, Gel Cleansing Field & MORE!1Portal 2 3.LIVE | FIRST LOOK at PORTAL: REVOLUTION - Over 40 new puzzles, Gel Cleansing Field & MORE!0Portal 2 4.Time Travel In Unofficial Portal 3 !? It's Gonna HURT My BRAIN! I'm Missing GLaDOS - Portal Reloaded0Portal 2 Top 100 » 200 » 300 » 400 » 500