The Lost Cities Mod FAQ

Build a portal frame out of the mod's portal blocks and light it, or use the dimension command if cheats are enabled. The portal takes you to a fresh Lost City dimension generated from the current world seed.

Step back through the portal you arrived in, or build and light a new portal in the city. Keep track of your entry portal's coordinates, since the return trip can drop you far from where you started.

The dimension has its own lighting and sky settings, and many buildings have no working lights. Bring torches, glowstone, or a light source mod, and watch for dark interiors where mobs spawn.

Loot spawns in chests inside buildings, on highways, and in special structures like hospitals and military sites. Search upper floors, basements, and rooftops rather than just ground level.

No, mobs spawn in the dark and the city is huge, so nights are dangerous. Set up a lit shelter early, or explore during the day and return before dusk.

You can build anywhere in the dimension, but the terrain is procedurally generated and may overwrite or clip your builds on reload. Build on cleared ground or in a structure you've secured.

Use coordinates, place torches or markers as you go, and note landmarks like highways or unique buildings. A map mod or compass helps a lot in the dense skyscraper layout.

It generally works with most mods, but world-gen and dimension mods can conflict with its procedural generation. Test in a new world before adding it to an existing save.

The dimension generates huge numbers of blocks and structures, which is heavy on memory and CPU. Lower render distance, reduce entity counts, or allocate more RAM to improve performance.

The city is abandoned, so friendly mobs are rare or absent by default. Most inhabitants are hostile, so treat every structure as potentially dangerous.

It transforms Minecraft's Overworld into a vast, abandoned civilization, or lets you play in an old abandoned city instead of the normal overworld. Cities are integrated into the normal terrain, so the mod can be combined with other biome and terrain mods.

You can choose "Lost Cities" as your world type, or access it as a separate dimension with default ID 111. The dimension can be entered by placing a bed on two diamond blocks surrounded by six skulls and attempting to sleep in it.

The mod lists support for Minecraft 1.20.1, 1.21, 1.21.1, 1.21.11, 26.1.2, and 26.2.

It is available for Fabric, Forge, and NeoForge.

Yes, the mod can be used server-side only, allowing vanilla clients to connect when no client-side Lost Cities features are required.

The mod generates ruined skyscrapers, apartment blocks, factories, roads, highways, bridges, tunnels, subway systems, parks, flooded areas, and underground rooms. These contain loot, spawners, cellars, lighting, and extensive damage and decay.

Yes, it is very configurable. You can add custom buildings and use modded building blocks, and there is an in-game configuration screen for selecting a profile and customizing generation.

Profiles are presets that alter world generation. Depending on the selected profile, the world can contain sprawling city regions, rare cities separated by wilderness, heavily damaged ruins, safer buildings, tall skylines, domed cities, or other specialized landscapes.

The facts do not describe any new items or blocks added by the mod. It is a world generation mod focused on generating cities, structures, and loot.

Yes, cities are integrated into the normal terrain, so Lost Cities can be combined with other biome and terrain mods. The mod also supports biome and terrain-generation mods.