It was fun to locate the treasure with the tracker and other tools. There are a lot of ideas I like here. The graphics are great, particularly the environment ones. Music would be good if it was much longer, the short loop got irritating rather quickly.
The digging part was a bit tedious, there was no challenge and you had to just wait until you can click again. A couple of times I ran into a bug where my character was pushed off a hole and failed to pick up the new tool. I had to restart because of it.
I was wondering what the stones and the building was gonna be about. It would have been fun to at least get some reactions from the people when I removed all the stones. And apparently the building and people had too great a mass to be sucked into a black hole.
Nitpicks aside, the game is very good for a jam submission. Well done!