Endless Grim-geon

Since a DOOM version of this format exists, why not Warhammer 40k? It makes for an excellent dungeon crawler experience anyways, note that since I couldn't find the endless dungeon script, it may not be the same experience. Battle cultists, xenos, t'au, orkz, necrons, eldars, drukhari, maybe even the Imperium itself that all happen to be confined in this dungeon that constantly shifts from a space hulk to a hive world dungeon, maybe even not-seen-before enemies.