Awesome game! I was enjoying it a lot. I think it's one of the best games in the jam.
Found a few issues:
1. You can place several Gas Collectors in one place. I placed like 80 gas collectors there, because i was curious about max. values of them in one place xD
2. You need to add a way to cancel build.
3. Also would be nice you you could build several buildings with only one click on "build button". When you place huge amount of objects it's frustrating to select building every time.