I haven't stopped playing it. Not really interested in the story and missions per se (some aren't too terrible) though I did play it through twice, and enjoyed the 2nd play through more. Also I learned that if you only kill 2/3 warlords you can continue to play against numerous AI enemies in most of the map (one is empty), with GFH, skillz and all the weapons you can hold, ad nauseum (I'm testing out that theory).