I have had this game a few years but only played a few times as my computer wasn't quite up to the graphics

DVD is still in mint condition and comes with serial number for installation etc.

The game box is long gone but DVD is in DVD holder which has been keeping it safe for the past few years

This game is from the makers of Operation Flashpoint which at the time was described as the most realistic war sim ever. And this game is an upgrade of Operation Flashpoint.

Check out the details and screen shots on google

http://www.armedassault.com/features.html

Story driven singleplayer campaign: by choosing the right mission order when playing the 20+ mission campaign you write your own history. Play it differently next time and find new ways to victory!

Large scale multiplayer: battles where tanks supported by infantry and helicopters take control of an enemy city can be played with 100+ living opponents in a role of both friendly and enemy forces.

More than 30 weapons: a new and improved recoil system gives unique firing characteristics to every weapon.

Vast environment to explore: an area over 400 square kilometers in size, full of flora and fauna is ready to be explored at your command.

More than 30 modern vehicles: all vehicles in the game can be controlled - tanks, armoured vehicles, helicopters, airplanes, civilian cars or even boats.

Multiple gunners: utilize the multiple gunner positions on tanks and helicopters to rain death on your enemies both in multiplayer missions and singleplayer campaign.

HDR Lighting effects: ambushing an enemy with the sun in your eyes leaves you at the disadvantage. Think smart, fight better!

Real constellations and tides: ArmA's great depth even includes such features as fully simulated star maps, lunar cycles and tides. Watch where you park your vehicle, soldier!

Built-in mission editor: create you own scenarios using the easy-to-use mission wizard