The turret aiming needs work. Try something like this: http://stackoverflow.com/questions/2676719/calculating-the-angle-between-the-line-defined-by-two-points
I've been having a problem spending the alliance coins if you have the correct amount. If it costs 12 and I have 12 then the button color changes but I can't spend until I have 13.
You should make sure that the evolve button only lights up when an upgrade is available. This is a problem with the virus/antivirus upgrades. Also, the unify upgrade doesn't seem to work. It takes the cost but then it doesn't restart.
For some reason, the unity preloader only loads a bit before it switches to an idle blacksmith sign. It then does nothing. In other words it doesn't seem to want to start. An ideas?
it is there now