Top 100 Portal 2 Videos With The Longest Duration by The Librarian
| Video Title | Duration | Category | Game | |
|---|---|---|---|---|
| 1. | The Office Prank - Portal 2 Horror Series (Full Trilogy) | 1:37:48 | Portal 2 | |
| 2. | Portal 2: Dream Pools (Fell into the Back Rooms!) | 39:59 | Portal 2 | |
| 3. | The Office Prank: Halloween Trick or Treat (Portal 2 Horror Map) | 39:14 | Portal 2 |