Very fun! Great work especially for a first game jam, you and your team did an excellent job throwing this together. I did encounter a bug when I reached the third stage where you eat the buildings, my camera shot off the map. Besides that bug, no issues and visually the game has a wonderful look.
Feature wise, I think it would have been fun to be able to fly in the smaller sizes, and perhaps some other ability when you get larger, maybe something to consider if you continue with the game!