From the back cover:
Aftermath! Technology! is a rules expansion and technology supplement designed for use with the Aftermath! role playing game system.
Included in this supplement are modifications to the original Aftermath! combat system, a Universal Character Generator with an expanded list and descriptions of 39 various humanoid races, details on over 100 cybernetic devices and options, rules for space travel (including faster-than-light travel), spaceship design, robots, alien creatures, a detailed listing of 38 new skills, High Tech and exotic equipment, detailed breakdowns on sever hundred weapons, and simple rules for net running.