This book is a an anthology of eight adventures based on the first four Alien Modules released by GDW. There is a Players Section and a Referees Section for each of the adventures included in this book, and also a general referees guide section at the end. The 8 adventures (and related Alien Modules) are: The Last Patrol (Zhodani) Deep Metal (Zhodani) Prosperity for the Taking (Vargr) No Credit Check (Vargr & Zhodani) First Son, Lost Son (Aslan) Interdiction Zone (Aslan) Ahriy Uprising (Aslan) The Casteless (Droyne) From the back of the book: "This module is intended for use with Traveller. Each seperate scenario deals with one particular alien race, and it is necessary that a copy of the appropriate aliens module be on hand prior to play. A TRAVELLER Adventure Module Alien Realms Eight Excursions Beyond Human Space The Third Imperium, teaming with life and activity, is the source of countless adventures. However, outside the Imperium there exist worlds untouched by human hands. Aliens have shaped these worlds, worlds where exotic adventures can be had - where a completely new type of science fiction adventure prevails. Alien Realms is an adventure module created especially for the player who has enjoyed the Traveller Alien Modules."