It's fine
A different way to play missle command, for sure, and it is difficult to aim those blocks where you need them.
Very well made, good music and a challenge. But I also get the feeling that one play is enough. Perhaps if you can get your towers back after enough points? Or maybe you blocks could get bigger as well as numerous?
But other that that it's a one shot deal. I'm just not hooked to play more of it.