McOSM

McOSM imports OpenStreetMap data and generates the matching parts of a world. Building shells take their height from the OSM height data, windows are placed according to the number of floors, and walls take a material from the material or building color tags. Roads are built with different types chosen from OSM road data, along with pedestrian crossings, walkways, stairs and corridors inside houses. Tunnels are created automatically where the data calls for them, and train platforms are built as well. Trees, tree rows and hedges follow the vegetation data.

The mod can be driven from a GUI or from commands. A GUI button fetches the API data and builds it in one step, and a command opens the builder window. Data files can also be loaded directly, and a link to the API URL can be copied to the clipboard. GPS coordinates convert to and from in-game coordinates, and a building can be started right under the player without opening the GUI. An error box reports a failed fetch, and a chunk-based build option handles large areas. Cubic and non-cubic chunk worlds are both supported, and the mod can work with the Terra121 world to turn the map upright in the BTE projection. Outlines can be switched off for a cleaner result.

The mod is published for Forge 1.12.2 only, in version 0.4.1 from 2022-11-13. It is client-side only, so servers do not need it. The code is under the MIT License and is open source. Build Earth is named as a companion for compatible map imports.