Cool idea, i liekd it a lot. Its just something that bother me: how the mouse control works, all the cannons go to the position og the mouse and explode, and thats really annoying and not fun. What i want my bullet to do it to go to the direction of my mouse and continue until it hits something and explodes. Not just go to the position of the mouese to explode.
Also the music doesnt loop and when you die the money stays the same...those can be fixed really fast.