THis game rocks and i really don't play any RPG games ( in case you don't know what that is it's role playing game) any ways this game is out of this world and i know what your thinking how would i know i hasn't came out yet, but i watched the trailers and its awesome. THe first Mercenaries was awesome you get to do what ever you want, but now in the new game you can invite a friend and they can play campain with you or they can do something else you don't have to stay with your partner if you don't want to and your buddy can drop out of the game any time and it won't hurt you at all or he can join any time also.