Upload models as an obj, with the obj in a list, mtl in a list, and with all the textures in a sprite as images. Textures need to be 128 by 128 if possible. Modelers, please make tracks under 3500 tris apiece. This is to ensure performance, and 3500 is around twice as much as the DS tracks. I am working on the world map right now, and will ensure it is under 500 tris when I am done. Karts will need to be around 125 apiece, which is maybe a bit less than the karts in DS, but probably doable. Let me know if you need a few more for karts. We need modelers to work on karts right now, a track list will be released soon. If you have track ideas, please comment them in the studio chat!