From publisher blurb: Zone Stalkers is a gamemaster-focused sourcebook for Eclipse Phase: Send players to the most perilous place on Mars—for Firewall, or for profit! Perimeter Security: How authorities keep the Zone quarantined – and how to get around it. Threats: New monsters, NPCs, and environmental hazards to challenge players. Locations: TITAN facilities, ruined habitats, and denizens' lairs. Plot Hooks: Reasons to visit the second most awful place in the solar system. Zone Stalkers is a 19-page adventure presented via Print-on-Demand and as a layered PDF with hyperlinks.