Top 100 Portal Videos With The Longest Duration by DoctorDDub
| Video Title | Duration | Category | Game | |
|---|---|---|---|---|
| 1. | PORTAL | Mini-Series: Levels 17-19 | 29:54 | Portal | |
| 2. | PORTAL | Mini-Series: Advanced Level 4 | 29:49 | Portal | |
| 3. | PORTAL | Mini-Series: Epilogue (Part 1) | 29:47 | Vlog | Portal |
| 4. | PORTAL | Mini-Series: Advanced Levels 1-3 | 26:31 | Portal |