Great idea! I had a lot of fun trying to make the planets as small as I possible could. I like how the building mechanic is forgiving, because if you overshoot, you can just go grab other materials.
Really fun idea. very original.
Suggestions:
- Saving! I would have loved to come back to my progress.
- When leaving an area, you might want to consider stopping the music so it doesn't stutter if the load takes longer on slow devices.
- It was a little dark! I wanted to see a little more clearly because your assets were really good.
Seriously, well done.