Homeworld 2 is a real-time strategy computer game sequel to Homeworld, developed by Relic Entertainment and released in 2003 by now defunct publisher Sierra Entertainment. Its story concerns Hiigara's response to a new enemy called the Vaygr. Its gameplay takes a new direction with the enhancement of its graphics and audio. In contrast to the closely equivalent Kushan and Taiidan forces of the original game, Vaygr and Hiigaran spaceships differ significantly in design and application.