
McOSM
Java mod listed for Minecraft 1.12. Downloads from the MC Java Mods app on Android.
⬇ Download on Modrinth

McOSM
A Mod that imports OpenStreetMap data into Minecraft, fully compatible with CubicChunks, Terra121 and the Build The Earth map projection.
Features
- Making building shells.
- Making each house the right height based on its OSM data height.
- Adding windows on buildings based on how many floors they have.
- Set building material based on OSM material data.
- Set building material based on OSM building color data.
- Making roads.
- Creating different road types based on OSM data.
- Including walkways, stairs and corridors inside houses. (
TODO) - Automatically making tunnels. (
TODO) - Adding pedestrian crossings to roads.. (
TODO)
- Making railroads. (
TODO)- Building train platforms. (
TODO)
- Building train platforms. (
- Making vegetation
- Making trees, tree rows and hedges based on OSM data.
- Gui to auto download API data and build in one command.
- Load data from a file or from the API.
- Building in Cubic or Non-Cubic chunk worlds.
Commands
There are several commands to load map data into minecraft, here are all of them:
/osmor/osm [lat1] [lon1] [lat2] [lon2]to open the download and build gui/osmshellto start building the building right under you without a gui/osmfile [path]to open data from a file and open the build gui/osmapi [lat1] [lon1] [lat2] [lon2]to copy a link of the api url to your clipboard to manually open it/osm stopto stop all current tasks/osmcoords <to/from> <x/lat> <z/lon>to convert GPS coordinates to/from ingame coordinates
Usage
Go on a map (like Google maps), then find the latitude and longitude of the northwest and southeast corners of the area you want to download (How?), and save those coordinates for later.
Then run the
/osmcommand which will open the builder guiSelect the features you want on the left (The [Global/Local] toggle changes the building placement from on the terra121 map location to locally around the player)
Then paste the latitude/longitude you copied from earler into coordinate boxes. the map preview should now vaguely line up (It doesn't enterly line up! As long as it isn't on the other side of the earth it should be fine)
Then click the
DownloadButton and wait for it to download, If it wasn't successful it should say an error in the output boxIf it successfully downloaded, you can click on the
Startbutton to start building (you don't have to be in the chunks its building in for it to build)
Important:
When using the mod in a Terra121 world, turn the map direction to upright and BTE projecttion!
Also turn off roads and building outlines for the best result!
- Edition: Minecraft Java
- File type: .jar
- Minecraft version listed: 1.12.2
- How to install: Install the matching mod loader (Forge, Fabric or NeoForge) for your Minecraft version. → Download the .jar. → Put it in the .minecraft/mods folder and launch that loader profile.
- Where to get it: Opens on Modrinth — not every file is mirrored on our own servers.
Install steps are the general flow for this file type — How to install Minecraft Java mods & modpacks walks through it step by step.
- Ships as mcosm-0.4.1.jar — drop this file into the mods folder
- Download size: 732 KB
- Download link checked 1 Nov 2026 — working
These come from our own check of the pack file, not from the source page.