Walled City Generator Mod.
Creates large procedurally made cities in your world that you research. Cities are predicated on a customizable format that lets you customize several aspects such as materials, size, density, and depending on your want. Cities also consist of custom wall designs, structures, and dungeons to conquer. Presently eight city designs come with the mod, including friendly cities occupied by villagers, many”ruined” city designs filled with hostile cities, cities in underground caverns, and a city that spawns only in the nether. SSP and vanilla SMP models are available.