Operation Flashpoint: Resistance (also known as ARMA: Resistance) is an expansion pack to Operation Flashpoint: Cold War Crisis. It was developed by Bohemia Interactive, authors of the original game, and published by Codemasters. It is second expansion of Operation Flashpoint while the first one is Operation Flashpoint: Red Hammer, which was developed by Codemasters. Resistance was later re-released as part of ArmA: Cold War Assault.