Top 100 Portal 2 Videos With The Longest Duration by SynergeticGames Stream Archive
| Video Title | Duration | Category | Game | |
|---|---|---|---|---|
| 1. | Portal 2: Episode 2 | 5:42:05 | Portal 2 | |
| 2. | Portal 2: Co-op Special episode 1! | 3:51:13 | Portal 2 | |
| 3. | Portal 2: Episode 1 | 3:04:03 | Portal 2 | |
| 4. | Portal 2: Co-op episode 2 | 1:33:00 | Portal 2 |