Top 100 Portal 2 Videos With The Most Comments by YMS StreamsTop 100 » 200 » 300 » 400 » 500Video TitleCommentsCategoryGame1.Plazethrough: Portal 2 Co-op (Part 1)17Portal 2 2.Plazethrough: Portal 2 (Part 1)13Portal 2 3.Plazethrough: Portal 2 (Part 2)9Portal 2 4.Plazethrough: Portal 2 Co-op (Part 2)1Portal 2 5.Plazethrough: Portal 2 Co-op (Part 3)1Portal 2 6.Plazethrough: Portal 2 Co-op (Part 4) FINAL1Portal 2 Top 100 » 200 » 300 » 400 » 500