I too really couldn't figure out the interaction between crops, people and food... I assumed I was trying to get a positive food flow (which even turning off population and planting like 30 plants didnt do), but after reading loressas comments is it just trying to get as many people as possible before everyone dies ? i could never seem to use the other crops ? are they crops ? one looks like a scarecrow or hanging tree :D
there's the core of something nice here, the Ui needs a clean up especially the cursor highlighting over the field plane rather than on it (so a flat grid would be better if you dont want to project a shader down onto the playfield)
I quite liked the audio loops, is that from an asset pack or did you compse it/have a composer ? (if it's from an asset pack lemme know which one, it's a good tune :D )