Welcome to Zone Compendium 4 for Mutant: Year Zero and Mutant: Mechatron. This booklet contains extra material for the Gamemaster. It builds on the events in Mechatron, so to fully utilize the contents of this compendium you should have access to that book, too.
Most of this booklet is taken up with information concerning four complete Special Zone Sectors. They follow the same format as the Zone Sectors that are included in Chapter 15 of the Mutant: Year Zero core rulebook. These adventure locations can be placed in any sector of whatever Zone you are playing in. Note that all the sectors in this compendium include robots, so they should not be used before the fall of the Mechatron-7 facility (see Mutant: Mechatron).