Wow, this feels like a full release.
The gameplay is fun (Although gets dull after a while, due to it being highly repetitive, although the difficulty curves help to break it up a little.), and strategy is required, although it's not so much that you have to think very hard. There is a variety of things to do, all the while managing recourses and more.
The art and audio are both amazing too, and fit perfectly together. The high resolution pixel art is perfect for this kind of game, and each sound effect is crisp and 'sci-fi-y'.
What I'm trying to say is that you've gone above and beyond with this amazing submission.