good! i gota masive bug alert though.
once you get to the catapults, when you nuke em, they die and you get like oodles of money but then they come back in the same spot. if you wait for 2 to come on the screen you can jsut keep nuking them, wait for nuke to fade, nuke, fade nuke fade and then when you run out click to destroy them. this way i got over 100000 in 3 levels, lol.