A good army game, If you got time and the friends to get together and take out objects then this game is for you.

A+++

ArmA for those you aren't familiar is the spiritual successor of the Game of the Year Operation Flashpoint, one of the most realistic military sims ever. Once you start playing you'll immediately notice the similarities. It's basically a game, no sim, where you can play as infantry, or drive a humvee, or tank, or fly in a helo or harrier jet… what ever you fancy. It's incredibly detailed and challenging, but it only gives as much as you put into it. One of the things that may put people off is also it's selling point: realism. One or two shots is enough to drop you, and often you get dropped without even knowing what hit you. This is a far cry from classic FPS games where you have a set amount of HP and you often can take quite a beating before you “die”.

One of the things that increases the immersion factor with this game is trackIR, or a head mounted tracking system where if you move your head in real life, your character also moves his/her head. This can be magnified so if you move 10 degrees your in game character moves 50…etc. This is especially in flying helos where you can track targets by moving your head. Also, you should invest in a decent joystick, preferably with a throttle to get the best experience from flying helos.

Oh yeah, and there's a huge and active community making lots and lots of mods. I know ArmA II is out now, but it is still in it's infant stages. Some more bugs to iron out there, so why not start with ArmA?