A nice concept, but still needs some balancing. The costs escalated too quickly and I went from destroying all ships in a wave to having a single ship survive and take out my entire population with one hit. Sigh.
Interesting idea, but badly buggy. I couldn't get past the first level without it freezing up during the AI's turn. Keep working on it, but this version is not yet playable.
 "Mushroom Revolution"){kind=icon}
 "Grid"){kind=icon}
 "Get Off My Planet"){kind=icon}
 "Ultimate Defense 2"){kind=icon}
 "Bumper Bowl"){kind=icon}