Its a good game in a lot of respects, but the click on your towers thing has to go. Its a depthless mechanic that becomes more of a hassel than anything else.
Once of the best things about this game is the random placement of enemies in levels each time you play. Excellent idea. Slick game design overall. Hope to see more.
Good game with some nice ideas, however, the game is too easy overall, and there is no real difference in difficulty between the Easy, Medium, and Hard levels. Your starting position is slightly less defensible in the harder levels, but there is no change in the difficulty of the waves from the easier levels. Part of the problem is also the fact that the enemies always enter the field from the same position. Once you have your defenses set there, there's pretty much nothing they can do... and I managed to have my defenses secured on the Hard levels by the 5 or 6 wave... Also, I beat the Red Dawn level on my first play, never building any cannons or upgrading from Palisade walls. I'm of the mind that diversifying units and upgrading basic defenses should be ESSENTIAL in a harder level; the player should be forced into putting to use everything he's learned from previous levels.