Twin Giants
From Starsonata Wiki
An anomalous wormhole leads to the very heart of Koto Research's power!
Twin Giants is the final star system in a galaxy chain that also includes Contracosta and Twirl and Twist.
Players can only venture here once for a mission directed by Gary Oilheart. He requires the destruction of a key Ganglinite research outpost, all the while braving Koto Research's additional forces.
Entrance to this galaxy needs a special item, of which is only given during the mission.