Features:

• Support of DirectX 9, DirectX 10, DirectX 11 and OpenGL
• Comprehensive use of tessellation technology
• Advanced SSAO (screen-space ambient occlusion)
• Volumetric cumulonimbus clouds generated by a physically accurate algorithm
• Dynamic sky with light scattering
• Interactive experience with fly/walk-through modes
• Benchmark mode

Software requirements:

• .NET framework 2.0 (Windows version only, optional)
• OpenAL (included into Windows installer)
• Latest stable video drivers

Hardware requirements:

• Tessellation feature REQUIRES a GPU with DirectX 11 support!
• ATI Radeon HD 2xxx and higher or NVIDIA GeForce 7xxx and higher (recommended: NVIDIA 8800 / AMD 4800 series)
• 256 Mb of video memory

Known drivers issues:

• [ATI] Alpha-testing is wrong in OpenGL
• [ATI] Depth of field works incorrectly in OpenGL
• [NVIDIA] Low color precision on 7xxx series