Top 100 Portal 2 Videos With The Longest Duration by ZWtcp
| Video Title | Duration | Category | Game | |
|---|---|---|---|---|
| 1. | This isn't therapy, this is ART! (or is it both...?) (Standard Co-op) | 4:34:35 | Portal 2 | |
| 2. | GLADOS promised us REAL HUMANS (but it's probably a lie?) (Standard Co-op) | 3:28:44 | Portal 2 |