Hold down the mouse button and the Nanobot will follow your cursor. Once you shoot the enemy, It'll respawn somewhere random in the area. (If it's a bit buggy, I'm probably going to fix what I was trying to add later.)
..So.. I'm hoping to make a game out of this later, but I'll just leave it like this for now... Sprites from: Nanobots(Nitrome Game) Nanobots: http://www.nitrome.com/games/nanobots/#.UrxtN9JDuSo