Short summery
The design is pretty well made, though the structure lacks technological sense as in why would a small miniscule sphere require large futuroso industrial tank treads?
The detail is quite impressive, but the polycount seems a bit too high in my perspective, though for artistic purposes that doesn't matter, but for video games it does.
Could use a backround of some sort but the black is better than the previous white you had, good call on that.
Render quality is superb, though a little refinement is needed for sharp sleek edges.
Scores-
Idea: 8/10
Model: 7/10
Quality: 9/10
Creativity: 8/10
Environment: 5/10
Overall 3D piece: 7/10