The story is interesting but I won't break you with it but in the game you find out why this robot must fight the bugs and other very unpleasant things. The game offers several modes but I recommend the standard where you use only the arrows. The hero robot is under attack from all the directions and he must destroy them. If you press the wrong key then he hurts himself and loses the health. The other modes are about the same type of game but you have to press more keys or use more difficult procedures.