yeah, i agree with most of the guys above, definite keyboard shortcuts are required to maybe "build the last tank built at the furthest right factory" and another to scroll to the beginning and end of the level, the upgrades are acceptable but the descriptions could be a bit more clear, good start to what may become a great game
 "Doodle God"){kind=icon}
 "Thanks Tanks!"){kind=icon}
 "CycloManiacs"){kind=icon}