3D model of a 3D puzzle set of 80 elements which assemble into a cat. Created and textured in Blender, boolean/n-gon workflow. The model was successfully tested in Unity (as FBX).
The puzzle set contains 80 elements (assembled and disassembled). Maybe it can be 3D printed, but I can't be sure, I don't know much about printing and I have no means of testing it. However, it's a real puzzle and it can be assembled and disassembled in Blender (or other 3D software).
Available formats: BLEND, FBX, OBJ, GLB.