From the back cover: "Included in this set are: Complete TIME DRIFTERS rules. Micro Module 'Dry Gulched at Fort McCallum.' Time Masters Screen" From the introduction: "The Time Drifters role playing game combines the excitement of science fiction with the harsh realiites of the past and the incredible adventures of the future. any hours of enjoyment await all who dare to challenge the Time Masters. Included in this game are all the rules necessary for surviving the deadly enemies that populate the centuries. One campaign may be up to six hours of adventure, or it may be one step in a series of combined adventures. Watch your characters grow in rank and power with each vanquished foe. But be careful, not all who encounter your hero will wish him well. He may become a tasty stone age meal for a hungry Tyrannosaurus Rex. Or perhaps some evil despot will sentence him to the gas chamber in twentieth century Germany. Your roll of the dice may be the only thing keeping your character from a band of marauding Apaches! This set includes your first adventure and is programmed to be played in the Wild West of the USA. Also included are campaign maps and instructions that detail planned encounters. Also, DSI has new and exciting adventures available by mail order. So strap on your life support system, load up your six-shooter, and batten down the hatches! Your first adventure has begun!"