Part of TSR's minigame series. From the rulebook...
"The Revolt on Antares minigame has three different scenarios. In the basic game, the Rebel player leads his or her allies in revolt against the Terrain forces and the houses that remain loyal. In the second game, the Terrain player tries to defend himself against revolting houses in league with invading aliens, the Silakka. In the third game, Terra is neutral, while up to four players try to create the most powerful house on Imirrhos!"
- Revolt on Antares