Top 100 Portal Videos With The Most Comments by WithPCGameTop 100 » 200 » 300 » 400 » 500Video TitleCommentsCategoryGame1.Warp - Walkthrough - Mission 6 - Laboratory5WalkthroughPortal 2.Warp - Walkthrough - Mission 8 - STU-235WalkthroughPortal 3.Warp - Walkthrough - Mission 4 - Aquatic Research Department2WalkthroughPortal 4.Warp - Walkthrough - Mission 7 - Command Center0WalkthroughPortal 5.Warp - Walkthrough - Mission 2 - Laboratory0WalkthroughPortal 6.Warp - Walkthrough - Mission 3 - Command Center0WalkthroughPortal Top 100 » 200 » 300 » 400 » 500