America's Army is a shooter game released in 2002 designed and developed by U.S. Army. America's Army can be described as a full free version game and can be played on the following operating systems: Windows, PlayStation 4, Linux. America's Army is also a multiplayer game.
“America’s Army: Proving Grounds is the official game of the U.S. Army and part of the highly acclaimed America’s Army game series. This free military game focuses on small unit tactical maneuvers and puts you to the test in a wide variety of new America’s Army maps as well as AA fan favorites.” - U.S. Army