Star Trek Starfleet Command II: Empires at War (known in North America as Starfleet Command Volume II: Empires at War) is the sequel to Star Trek: Starfleet Command and the second in the series of real-time space combat games developed by Taldren Inc. and published by Interplay. A stand-alone expansion pack was released in June 2001 titled Starfleet Command: Orion Pirates. The game features three singleplayer campaigns two storyline campaigns and a general conquest campaign. The first of the storyline campaigns dealt with the return of the Organians and their bringing the Interstellar Concordium in to 'pacify' the existing empires. The existing factions resist this pacification attempt and a new war ensues. The other story campaign only playable by the Mirak Lyrans Hydrans and Klingons deals with the discovery of artifacts belonging to an ancient race of telepaths.