The Stanley Parable

Minimum:

• OS *: Windows XP/Vista/7/8
  
• Processor: 3.0 GHz P4, Dual Core 2.0 (or higher) or AMD64X2 (or higher)
  
• Memory: 2 GB RAM
  
• Graphics: Video card must be 128 MB or more and should be a DirectX 9-compatible with support for Pixel Shader 2.0b (ATI Radeon X800 or higher / NVIDIA GeForce 7600 or higher / Intel HD Graphics 2000 or higher - *NOT* an Express graphics card).
  
• Storage: 3 GB available space
  
• Sound Card: DirectX 9.0c compatible

Minimum:

• OS: Mac OS X 10.8 or higher required
  
• Processor: 3.0 GHz P4, Dual Core 2.0 (or higher) or AMD64X2 (or higher)
  
• Memory: 2 GB RAM
  
• Graphics: ATI Radeon 2400 or higher / NVIDIA 8600M or higher