Excellent
I love this type of game and this is an excellent specimen, the only problem I see is that some of the achievments are unatainable without spending money on the premium upgrades....I don't know why people don't understand that this sort of thing kills a good game...if you want to make a great game make a great free game to genrate interest and develop a following...then if it's good enough....make a sequal and sell it on a console like live arcade and your well on your way to making a stand alone title on a console...it's too early in the process to try and charge people for a game that your trying to get off the ground....your putting the carriage before the horse...overall though a great game...could use a little expansion and I would like to see this in a sequal