Not a fan of how this game is 50% dice rolls. How crappy is it to have a superior deck but lose round after round because a creature with regenerate 1 comes back every single time you kill it, or a flying enemy dodges four rounds in a row? No strategy. Just praying.
Cool ideas, which would theoretically add a cool risk and reward factor to an otherwise regular tower defense game, but it's way too inconsistent. Having to spend hundreds of gold digging in tiny squares all over the map praying to find power before you over upgrade isn't fun, and it can cost you the game just because you got unlucky. Nobody wants to spend 20 minutes setting up a base to lose because he just didn't click on the right invisible square.
I actually find the artillery mode to be almost perfect. Give me more kinds of ammo like a shotgun spread that costs 250 or something to work with besides just big and little shot, or amp up the damage on the little shot so it doesn't take 3 shots to kill the medium guys.
Enemies spawning on top of you is what breaks this game. The fact that a high score is 95% random chance is obnoxious... although I don't know how you'd iron that out.
 "Tyrant"){kind=icon}
 "Attack of the Furries 25 wave version"){kind=icon}
 "Momentum Missile Mayhem 3"){kind=icon}
 "Retro Assault"){kind=icon}