I like the style of this game. I know there are quite a few games like this around, but this one stands through it's style. I also like the upgrade factor.
So this is quite an OK game. except for the fact that I get stuck at lv 4 on normal difficulty. I find it a major turnoff if I can't succeed at a level within two attempts before the 25% mark. If I got absolutely stuck by lv 16 or so, it'd be forgiven. but it's by lvl 4.