Top 100 Most Viewed Portal 2 Videos by Video Game Announcements
| Video Title | Views | Category | Game | |
|---|---|---|---|---|
| 1. | Portal 2 E3 2010 PlayStation 3 Debut Trailer | 1,464 | Let's Play | Portal 2 |
| 2. | Portal 2 Full Co-Op Trailer (Cam) [PAX 10] | 1,244 | Preview | Portal 2 |
| 3. | Portal 2 Co-Op Trailer [GamesCon 2010] | 595 | Preview | Portal 2 |