ARMA: Armed Assault

The multiplayer aspect of the game features a "Join in Progress" option, so that players can play without waiting. The number of people allowed in a multiplayer game is limited only by the server's capability. NPCs are also available in multiplayer missions, both as allies and enemies, while the mission editor allows users to script battle scenarios. A cooperative mode of gameplay is also included, allowing players online to complete the single player missions as a human player squad. The Armed Assault community also creates custom content such as new missions, campaigns, factions and weapons.

A multiplayer mode that blends FPS and RTS elements was released as Arma Warfare in official update 1.14. Arma Warfare contains team-based multiplayer missions with real-time strategy. Two sides fight for control of the entire map or destruction of the enemy base. Players must capture whole cities to gain resources that can be channeled into manufacturing even more weapons, units and cars.

The campaign in Armed Assault is narrated by Private First Class William Porter of the United States Army (voiced by Todd Kramer), and takes place on the fictional Atlantic island of Sahrani, an island nation which is divided in two, with the northern section a Communist nation called the Democratic Republic of Sahrani (DRS) and the southern one an oil-rich monarchy called the Kingdom of South Sahrani. The narrative begins when American forces, after a few months of training the South Sahrani military, begin to depart the island. Prime Minister Torez, leader of the DRS, uses this moment of perceived weakness to launch a full-scale invasion of South Sahrani. S.

Army platoons not yet rotated off the island before the conflict began. S. Army platoons remaining on the island aid the Royal Army Corps of Sahrani (RACS), the South Sahrani military, in fending off the more powerful northern neighbor's offensive, being spearheaded by the North Sahrani military, with the Sahrani Liberation Army (SLA) at the forefront. S.

Arma received average reception on its release, praised for the unique believability of its action but criticized for its difficulty, complexity, and bugs. IGN said "Arma's adherence to realism and accuracy in terms of weapons and world design is highly commendable and hopefully will inspire other developers in similar directions." GameDaily praised its "spectacular graphics" and its multiplayer, but criticized its bugs and "complicated menu system". Computer Games Online said "It's hard...to believe that they actually thought that such an unpolished game would enjoy any kind of success."

The game has sold 300,000 units as of 28 February 2008. By 2010, sales has surpassed 400,000 copies.Generally Arma is celebrated as a tactical shooter and strategy video game.