Maniac Killer is a befitting title of the game and that is exactly what you are going to be as you play this fantastic online game. You know how to use all kinds of weapons but now it is time to show how effectively you can use them. You will have to go through the enemy territory killing all the enemies that you see in front of you. Attack them without giving them the first chance because the enemies will have weapons that they will not hesitate to use against you. The money that you earn by killing the enemies can be used to avail better weapons.