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September 29, 2015
Full Playthrough of Portal Prelude in a single video, 60 FPS, 1,080p HD, NO Deaths and NO commentary.
Please Rate and SUBSCRIBE! ***
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.