Catacrom Four laid deep in the Shadow Sector and was filled with ancient ruins. In actuality it was a robot burial ground, so travelers had to be careful about robot zombies poking their heads above ground level and taking a swipe at them. Due to its status as a burial ground, Catacrom Four likely hosted only a minimal living population. Catacrom Four was full of surprises, both on the surface and beneath. It was also DreadZone's starter course and where Ace Hardlight killed Captain Starshield.