: Open only the first part ( part1.rar ) with software like 7-Zip or WinRAR; the program will automatically pull data from the subsequent parts to reconstruct the full installer.

: You can activate retail keys or purchase the bundle directly on Steam , which handles all installation and updates automatically.

: While standalone, it can be combined with Arma 2: Combined Operations for the full sandbox experience. Handling Multi-Part RAR Files

: Unlike individual DLCs, this retail/digital bundle does not require the original Arma 2 or Operation Arrowhead to play.

: It introduces the British military and private contractors as playable factions.

: Official patches and setup utilities for the DVD version are available on the Bohemia Interactive Support site.