Top 100 Most Viewed Portal Videos by Source of Ambience
| Video Title | Views | Category | Game | |
|---|---|---|---|---|
| 1. | The Escape (part II) - Portal ambience | 222 | Portal | |
| 2. | Test Chambers 0-3 – Portal ambience | 210 | Portal | |
| 3. | Test Chambers 13-18 - Portal ambience | 173 | Portal | |
| 4. | The Escape - Portal ambience | 160 | Portal | |
| 5. | Test Chambers 09-12 - Portal ambience | 136 | Portal |