this is a good game, but one issue i had with it is the lack of variation, most of the towers do the same thing with slight differences in damage and speed. the 8 way shot was interesting, but otherwise i found that each tower shot exactly the same and the only difference was speed, damage, and range. *all of them being very similar at low levels*
also i found that once you lost, you had little incentive to play again, no reward system at all, no medals, no permanent upgrades, no new towers. the graphics are great, but overall this game seems a bit bland.
i do like this game, i just feel it needs a bit more variation. *i do like that you have 2 forms of gameplay btw*