i uploaded the first verion of this oc
http://platen-software.de/sebastian/stk ... -v1.tar.gzit's an "arena", so you need debug-mode to start drive in the game
in blender the objects have all names like zengarden_bridge, so you know, that this object is from zengarden
models from opengameart have a name like oga_name, from blendswap.com have bs_name, and self-modelled r_name
i also have included the textures and i have a file(not ready), that lists up used textures for every model (the newest models are missing in the list) and licenses
later i will add a license file for textures
if you add some objects and when you add some more objects, that use the same textures, you get something like this

- 001-data.png (12.06 KiB) Viewed 14773 times
i found out, that this make the blend-file very big
to solve that, you need to do some things in your track
1: select an object with a double-used texture
2: select one face with (name.001) and do "select similiar" and select "image"
3: if "fakeuser" is enabled, disable it
4:use the right texture
5:save and re-open the file, it could be, that you have do do this step twice to remove the other textures