Top 100 Most Controversial Portal Videos by Lambda Core
| Video Title | Rating | Category | Game | |
|---|---|---|---|---|
| 1. | Portal 2 Puzzlemaker - Freeware (Alpha) | 23 | Portal | |
| 2. | Portal 1 in Portal 2 | 17 | Portal | |
| 3. | The Black Box - Trailer | 19 | Preview | Portal |
| 4. | Portal Beta - Footsteps + Player Model Fix | 47 | Portal | |
| 5. | The Evolution of Portal (Testchamber Design Timelapse) | 636 | Portal |