to many enemies, not enough cash for upgrades...
i die every game.
would like a dificult setting i like to play on easy 1st to scoope the game out but other than that pretty cool game
first, you could give more constructice critic than just meh.
second, each killed enemy gave only one coin (that is not enough), the chopter should chase flying enemies on its own, the tower upgrades are not working (either i found a bug or a glitch, but the range-upgrade does not work for the bomb tower) and the game continues sometimes even if it should pause after i clicked on the menu button. please fix these bugs and it could become an awesome game.
Good game choice for health bars would be nice and more info in general otherwise good fun
Great Tower Defense!