Acrux IX was a planet located somewhere in the space of the galaxy's Beta Quadrant, the ninth planet in orbit of the Acrux star system. By the late 24th century, Acrux IX was a holding of the Romulan Star Empire, and was considered a friendly port of call by the Romulan Imperial Fleet. (ST video game: Starfleet Command III) In gameplay, this name was part of a list that were applied to planets on the game map, with random attributes assigned to them.