Top 100 Portal 2 Videos With The Longest Duration by ConstantineDTW
| Video Title | Duration | Category | Game | |
|---|---|---|---|---|
| 1. | Portal 2 Part 3 (Conclusion): Science Harder! | 6:19:48 | Portal 2 | |
| 2. | Portal 2 Co-Op Part 3: Cheevo Hunting | 3:34:00 | Portal 2 | |
| 3. | Portal 2 Part 2: Electric Boogaloo | 3:18:34 | Portal 2 | |
| 4. | Portal 2 Co-op Part 1: GLaDOS is GLaD to See Us | 3:11:37 | Portal 2 | |
| 5. | Portal 2 Co-Op Part 2: You're Tearing Me Apart, GLaDOS! | 3:03:43 | Portal 2 | |
| 6. | Portal 2 Part 1: Well that escalated quickly | 3:00:05 | Portal 2 |