I would suggest downloading the 'Sahrani Life' missions for ARMA, its basically like Crime City for OFP, which is a RPG based mission in a GTA style. Had some great fun playing the last week or so, my highlight was today when I walked up to 2 cops and set off my suicide bomb, wiped out about 5 people, 6 cars and half the street.

aha the RPG is class :P Its prefer Co-op domintation. i always go on with about 4-6 people, form up team with a couple of Ai people, then they go take the town while i snipe people with the M107