Shader Model 3.0 Windows 7 Farming Simulator 2013 =link= Guide
To understand why FS 2013 requires this, we must first understand what a "Shader Model" is. In the world of PC gaming, shaders are small programs that tell the graphics card how to render pixels and vertices. They dictate how light hits a surface, how water ripples, and how shadows are cast.
Navigate to your game installation folder (usually under SteamApps/common/Farming Simulator 2013 ) and look for a folder named . Shader Model 3.0 Windows 7 Farming Simulator 2013