Star Trek: Starfleet Command is a real-time tactical space combat game published by Interplay Entertainment for PC, released in 1999 (most sources cite August 11 in North America, though exact-day sourcing varies). Based on the Star Fleet Battles tabletop game, it lets players command starships from the Star Trek universe.
Expansions & DLC
Orion Pirates (2000)
A standalone expansion adding the Orion pirate faction as playable, along with new ships and missions built around raiding and piracy rather than the major powers' fleet warfare.