From the back cover:
Just over that rise ahead - you see them? Never laid your eyes on anything like that, did you? Well, neither did anyone lese - these are the aliens of the Shatterzone universe, and they're waiting for you inside these covers.
From teh unexpected encounters of Fleet scouts to the murderous inmates of Uru-Nabal, here are the strange, the wondrous, the deadly, many of them from beyond the reaches of the 'zone. They're cunning and trusting, fierce and fantastic, but most of all, they're ... alien.
This book contains descriptions and stats for dozens of new alien species for your Shatterzone campaign, suitable for use as player or gamemaster characters.