Portal was an ambitious attempt to tell a story with the depth of a novel and the interactivity of a game, sitting somewhere between interactive fiction and simulation of a computer system.
Screenshots
PC System Requirements
Minimum
OSWindows Vista, 7
ProcessorIntel Pentium 4 1.7 GHz or AMD Athlon XP 1700+
Memory512 MB
Storage4 GB
GraphicsNvidia GeForce 3 or ATI Radeon 8500
DirectX8.1
Recommended
ProcessorIntel Pentium 4 3.0 GHz or AMD Athlon XP 3000+
