Great game, and I loved the humor. I also think that the art style and creativity is some of the best I've seen. Theme wise however, I don't think the game fits it very well, and I also think that it gets repetitive. One think you could try to do to fix the repetitiveness of it, would be by making more unique aliens earlier, and letting us have more blocks would also be great. All of these are only suggestions though, and you can probably find way better solutions.