Star Trek: Starfleet Command - Orion Pirates is a stand-alone expansion pack to Star Trek: Starfleet Command Volume II - Empires at War. For the first and only time in the series, the Orion Pirates are a playable race, divided into eight cartels, each with their own ship configurations and weapon arsenals: Orion, Korgath, Prime, TigerHeart, BeastRiders, Syndicate, WyldeFire, and Camboro. Within the updated campaign map, each cartel operates in its own area of space, and the map screen can be configured to mark area possession by standard races or cartel operations in those same areas.
There are 12 new campaigns, 26 skirmish missions and 12 multiplayer missions on hand. It is also possible to create missions using the mission creator. Each of the previously available races are also playable, and get new powerful ships in the new Advanced era.