Gish

Minimum: Windows 2000/XP/Vista, AMD, Intel or G3 1000+ Mhz processor; OpenGL Compatible 3D Graphics adaptor (ATI, NVIDIA, Intel, etc.) with 32 mb of video memory; 256MB of memory
Recommended: AMD, Intel, or G4 1500+ Mhz processor; OpenGL Compatible 3D Graphics adaptor (ATI, NVIDIA, Intel, etc.) with 64 mb of video memory, 256MB of memory

• OS: OS X version Leopard 10.5.8, Snow Leopard 10.6.3, or later.
  
• Processor: Intel Core Duo 1.66GHz+
  
• Memory: 1GB of RAM
  
• Graphics: 64MB of video memory
  
• Hard Drive: 200+MB of free hard drive space
  
• Sound: Standard audio