It's ok... essentially just pachinko with some skill tree strategy when you break it down. addictive though. some nasty bugs that piss me off though, about 1 in 5 games when i click my last click it immediately says i loose before my last shape explodes. that bug is very lame.
basically a remake of desktop tower defense, which is fine if you would improve the UI of DTD. but looks like you didn't. the fact that there is no resign button kills it.
got all the badges... my strategy was to max out the bombers and miners *only*, i didnt add any other enemy type. since you don't get points for getting hit with thier missiles, all they do is slow you down.