Really fun game! The game has a nice loop that is very engaging, risking the orb's health to go out and get resources is really fun.
I have a few suggestions if you wanted to improve:
1. Add some sort of background, a number of times I moved away from the orb and couldn't tell if I was stuck or not simply because the background wasn't moving.
2. Add some sort of health indicator for the gold blocks and buildable blocks. It doesn't have to be complex, just some sort of tint making the block get darker the lower health it has would be fun and let the player know how much (about) is left.
3. Adjust the sound effects some. Hearing the same sound effect for collecting gold each time got slightly annoying near the end of my playthrough.
Overall a fun little game! Would love to see you work on this some more and see what you can do with more then 72 hours!