SuperTuxKart is a completely free kart racing game featuring the mascots of many open source projects. STK itself is open source and students and hobbyists are encouraged to experiment with it. You can make your own karts and tracks in Blender and use them in game. There is an active community that is constantly making new additions and refinements to the game. STK has been actively developed for over 8 years by our team. If you are a C++ programmer, an artist, translator, musician, or sfx designer you can get involved in the project.
This page describes how to "format" your objects in Blender 2.5 / 2.6, when making a track, so that the STK track exporter will recognize and export its properties.
Posted by toine on Jan 8th, 2013
Note that you need to be already somewhat familiar with blender. Tutorials are easily found with a Google search.
Texture your models with UV texturing. Your texture images size must be a power of two, e.g. 256x256 or 512x512, in .png or .jpg format (if you use a jpeg texture, give us the original lossless version [e.g. png] along the jpg one so that we have a lossless version).
Blender procedural materials are not supported and most of what you enter in the material buttons window will be ignored. Vertex colors may however be used.
For static objects, most combinations of scale and rotation will export file. However please avoid giving a negative scale to objects (this is bad practice anyway).