Atlanter vs Spaceamazonen (Atlanteans vs Space Amazons) is a sourcebook for SpacePirates. It describes two rival alien races. The Atlanteans have lost their home planet and roam space in their gargantuan city ships. The Space Amazons are pirates that are always on the hunt for technology and the Atlanteans.
The book also contains a few adventure seeds and a full adventure: Die Karte nach Atlantis (The Map to Atlantis), in which they search the home planet of the Atlanteans.