America's Army 3

An army game made by none other than the US Army. Written with the Unreal 3 game engine with great attention to realism. Basic training serves as both an off-line introduction to the game and a way to gather a few handy upgrades to help get you started. Characters can do more than run and shoot. Vault over obstacles, lean around corners, crawl, roll, and heal up fallen team mates who have been injured in the field. There are few maps to choose from in online play but none of them lack in quality. For each map there are multiple game modes: Capture and hold, VIP (where one team secures a target while another team hunts them), and Extraction (essentially capture the flag). Since release there are still bugs to be worked out in many places but for a free game this is a quality alternative.