Classic original fiction set in the Alien world, featuring Earth Hive by Steve Perry, Nightmare Asylum by Steve Perry and The Female War by Steve Perry and Stephani Perry.

Earth Hive:

Wilks was a space marine with a near-fatal flaw: he had a heart. Billie was a child, the only survivor of a far-flung colony outpost. Thrown together in the last hellish night of an alien invasion, Billie and Wilks helped each other get out alive. Thirteen years later Wilks is in prison, and Billie lives in a mental institution, the nightmare memories of the massacre at Rim...