Portal: Prelude [Full Walkthrough] (60FPS, NO Commentary)

Full Playthrough of Portal Prelude in a single video, 60 FPS, 1080p HD, NO Deaths and NO commentary. Portal: Prelude is an unofficial prequel to the game Portal. The game features a brand new storyline focusing on the pre-GLaDOS era of Aperture Science where test subjects are monitored by employees of the facility. *** Please Rate and SUBSCRIBE! *** Please consider donating to help produce High Quality Gaming Walkthroughs with NO annoying Commentary! Join us on- Facebo