Top 100 Portal Videos With The Longest Duration by DBracket
| Video Title | Duration | Category | Game | |
|---|---|---|---|---|
| 1. | Portal - Walkthrough part 2 | 15:03 | Walkthrough | Portal |
| 2. | Portal - Walkthrough part 1 | 15:02 | Walkthrough | Portal |
| 3. | Portal - Walkthrough part 3 | 10:31 | Walkthrough | Portal |
| 4. | Portal - Walkthrough part 4 | 8:43 | Walkthrough | Portal |
| 5. | Portal - Advanced Chambers - part 2 | 7:26 | Portal |