Groombridge

Groombridge is a mysterious, white supergiant star at coordinates 996.0 : 904.2, at the end of the Rainbow Arrow. Orbiting it is a single planet, which is the final Rainbow World that forms the "point" of their arrow formation.

Trivia

There was supposed to be an easter egg encounter with "bizarre, godlike incarnations" of the game's creators Paul Reiche III and Fred Ford at the Groombridge Rainbow World. The feature got scrapped due to Accolade's wish that the game was finished earlier. However, the art still remained. See [1]