Overkill is a continuing zombie MOVIE and you play one of the two main characters. What I like about it is that you don’t die FOREVER or have to start over from the beginning. You die in a scene. After which it tells you your score for the scene, how many headshots you got, accuracy rate, etc. Then you go on to the next scene. This continues until you reach the end of the movie. It allows 2 player co-op, or 1 player with 2 guns or 1 player with one gun. Have completed the first mode and about to go onto “director’s cut”.