STK 10 fully supports the COLLADA model format. COLLADA is a popular XML-based format for 3D models.
It can be edited in many 3D software tools such as Lightwave 9.5 and higher, Blender, 3D Studio Max,
Google SketchUp, Modo, Maya and Softimage. It is also an export format for model converters such as:
Starting with STK 10, COLLADA FX is now supported—enabling more realistic lighting, shading and texturing on models