I'm also looking at Blender to create worlds as Bundysoft's L3DT seems to be unavailable. I can capture my local area in Blender with the BlenderGIS add-on (Bing maps seem better quality around me than Google) and some open topography.org gets me the relief. Another Blender plugin allows me to export this world as a .3ds file, but my question is, how do I import this into BC? The terrain.ini file has entries for a heightmap and texture file so do I need something different here to accept just a .3ds file instead?