Copy pasted from the other topic, since it's too old to paste in:
Get it, seriously. It's a great war simulation. You could fly aircraft, drive tanks, even be a civilian spectating a giant war going on in the city. The landscape is just immense to say the least. It has mountains, forests, deserts, cities, etc. It's simply amazing. It's called ArmA: Combat Operations in the US , and it's about $20 on Steam. If any of you already have it, or plan on getting it, add me on steam shinji127.
Yes, ArmA 2 is better, but not all of us have a high-end graphics card, so this'll do.
Discuss.