A very interesting and well executed game. I'm a bit lost at first, but once I've figured out how to collect the apples, things are a lot more interesting. I like how unlike the typical resource management game where the resource gathering is hidden behind a building, you can see each ant being simulated and do their jobs. The change in lighting is also very well done and works well with the atmosphere you guys have created.
A few things that I want to point out is that it is a little hard to tell what the upgrades do since they're mostly text. Also, the frame rate stutters a little for me, but that's probably just a me-problem.
Great job on the game!