ArmA: Armed Assault

ArmA: Armed Assault (Worldwide) / ArmA: Combat Operations (US) is a tactical military First-person shooter and third-person shooter which was developed by Bohemia Interactive (BI), an independent game developer based in the Czech Republic. ArmA is the successor to Operation Flashpoint: Cold War Crisis, featuring a game engine with enhanced graphics, physics, Multiplayer functionality, scripting capabilities, as well as a large selection of new units and countries.

The game is based on the fictional island of Sahrani (a lot larger and more detailed than Operation Flashpoint's islands). The island is divided in two parts with the larger, northern, part been the Democratic Republic of Sahrani - DRS and the smaller, southern, part being the Kingdom of South Sahrani (a monarchy allied with the USA).