Sweet. If you have the machine to run it; ARMA 2 is the way to go. Don't be scared by the mods. Once you got the hang of it they are pretty easy to install and it all makes for a better gameplay. It still could take a week or two to get used to the rather complex key settings (especially with ACE2 and ACRE). But, like I said, it all adds up for an AWESOME Co-Op expierience.