I'm bored to death and I need something to keep my brain from going into a relapse due to boredom

and I'm contemplating on either ARMA II or Flashpoint Dragon Rising to keep me company and will probably try to drag a friend or two.
The question is are these two a good game? If so which one is better?
I'm looking for combat realism and high replayability
Or am I better of snapping Mass Effect 2? or Dragon age awakening?
I still prefer boardgames but finding an opponent is tougher than I imagined.