This game is about shooting enemies, with a bow. But waves are every level more difficult, so you need to upgrade your tower. For every kill, you get one coin. If you have enough of them, you can buy a new skin or a powerup, such as a shoot speed, a better wall or a repair speed. There are a total of 100 waves, and if you you pass them, you'll enter the infinite mode.
This is my first game, so there might be some bugs...