Top 100 Portal Videos With The Longest Duration by Akio Sai (Akio)
| Video Title | Duration | Category | Game | |
|---|---|---|---|---|
| 1. | Portal Walkthrough Part 4(Final) | 26:55 | Walkthrough | Portal |
| 2. | Portal Walkthrough Part 3 | 19:46 | Walkthrough | Portal |
| 3. | Portal Walkthrough Part 1 | 17:53 | Walkthrough | Portal |
| 4. | Portal Walkthrough Part 2 | 17:48 | Walkthrough | Portal |