Simple take on the theme IMO but it is well executed.
Graphics could use some work, just like controls (being able to go faster in one direction would be nice) but they're pretty decent. As for the audio... the music alone seems to have an okay loop length but during the loop there's very little variety. As I'm typing this I left your game running in the background and it's slowly driving me nuts. Please help me.
Oh yeah, also liked the buttons having the same text. Didn't know if I was going to tell the game I wanted to try again or to wipe my progress :D
If you like RTS games please check out my entry. I'd like some criticism and maybe a rating if you have time.