From the introduction: Need a stand-alone map for your virtual tabletop game? Complexes are self-contained maps that are also compatible with Dungeons in Blue geomorphs! Each product includes a stand-alone, ready-to-fill dungeon map drawn in the classic-blue style. They have assorted tricks, traps, and features but leave plenty of space for the GM's additions. All Complexes also include geomorph-ready versions of the GM and player maps that have the added doors, rooms, and corridors required to connect to Dungeons in Blue tiles.