Amnesia: The Dark Descent 

Minimum System Requirements
OS: Windows XP
Processor: Intel Pentium 4 @ 1.5 GHz / AMD Athlon XP 1500+
Memory: 1 Gb
Hard Drive: 2 Gb free
Video Memory: 128 Mb
Video Card: nVidia GeForce 6600 / ATI Radeon X1300
Sound Card: DirectX Compatible
DirectX: 9.0c
Keyboard
Mouse
DVD Rom Drive
Recommended System Requirements
OS: Windows XP/Vista/7
Processor: Intel Pentium 4 @ 2.4 GHz / AMD Athlon XP 2500+
Memory: 2 Gb
Hard Drive: 2 Gb free
Video Memory: 256 Mb
Video Card: nVidia GeForce 7800 / ATI Radeon x1900
Sound Card: DirectX Compatible
DirectX: 9.0c
Keyboard
Mouse
DVD Rom Drive