Portal: Prelude Full Walkthrough (60 FPS, 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 preGLaDOS 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