Adam & Eve: A twin planet system with completely different environments. Adam is an ocean world where most plant life is restricted to the water and are actually advanced coral, and they can all fight back. Animals have introduced a third gender to their gene pool and many animals have evolved a split body plan where different organs are found in separate bodies connected by an umbilical cord. Eve is a massive desert world with oceans and purple vegetation, scattered among mountains of red rock. The organisms have evolved from sea shells and are completely armored.