ArmA: Combat Operations - PC The player will find himself thrust in an engaging and expanding storyline, fighting against smart, aggressive enemies who will continually provide a challenge over a massive landscape. Vast environment to explore - 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 gunner positions on tanks and helicopters to rain death on your enemies, both in multiplayer missions and singleplayer campaign Realistic gameplay with accurate constellations and tides, fully simulated star maps & more