Top 100 Portal 2 Videos With The Most Comments by TarmackTop 100 » 200 » 300 » 400 » 500Video TitleCommentsCategoryGame1.Who Is GLaDOS? | Gaming Chronicles | Villains130Portal 2 2.What Does Net Neutrality Mean For Game Streaming? | Feature Creep19Portal 2 3.Will Valve SteamOS & Steam Machine Beat The Consoles? | Feature Creep By Tarmack12Portal 2 4.Do you own your video games? part 22Portal 2 Top 100 » 200 » 300 » 400 » 500