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Developer Information
Portal
Developer: Valve Software
Publisher: Valve Software
Official Website: Visit
Genre: First-Person, Shooter
Platforms: PC, Xbox 360, Playstation 3
Total Files: 6
Total Downloads: 9,253
Half-Life 2: Portal - GDC 07 Developer Walkthrough Pt. 1

Added: 2007-03-07
Downloads: 1,472
View Half-Life 2: Portal - GDC 07 Developer Walkthrough Pt. 1


Take an in-depth look at the bonus single-player campaign Portal included in the Half-Life 2 Orange Box.