Top 100 Portal Videos With The Longest Duration by Alvin
| Video Title | Duration | Category | Game | |
|---|---|---|---|---|
| 1. | Portal - Gameplay Walkthrough - Part 3 | 48:33 | Walkthrough | Portal |
| 2. | Portal - Gameplay Walkthrough - Part 2 | 34:04 | Walkthrough | Portal |
| 3. | Portal - Gameplay Walkthrough - Part 4 | 29:51 | Walkthrough | Portal |
| 4. | Portal - Gameplay Walkthrough - Part 1 | 21:47 | Walkthrough | Portal |
| 5. | Portal - Gameplay Walkthrough - Final Part | 12:42 | Walkthrough | Portal |