It's Been Done Before
TD games are great fun, i rly love these sort of games but like lavalampa stated it seems the same as that TD game, yes i have played it just cba finding the name, also what he said about the towers being jsut square blocks i can see why u did that but why does it look like the towers are throwing stones, come on its a computer, u need lazers and the occasional little odd thing that doesnt work the top right tower u got u should of made it have a lower fire riate but it just launches an area of something, but seriously u based it on Windows Vista and they are throwing rocks, study all the TD games you can beacuse they are great games, and see if u can make the best cos u definatly have the graphica; design for a great qulity game, just make it worth playing