Ho great Andrew, think it would be possible to make a room in Doom builder with un-Textured walls to signal possible room entrance then put these as prefabs? If this could be doable, people could create TONS of rooms to add to the current generator and make the experience extremely varied, prettier and would help give more sense to the levels. For example, you could have barracks, med-bay, armory , computer mainframe (for base), streets, houses , apartments, stores, business (for town) sacrificial altar/pit , evil chapel , baron of hell/cyber demon throne room, mastermind Lair , Arachnotron/Revenant/Mancubus cyber Facility , torture chambers, possibilities are almost endless!! anyhoo, if you happen to be interested I could even make a basic set so you can focus on the REAL meat of the work a.k.a. coding =].