louis-e/arnis

Arnis is a free, open-source desktop tool that converts real-world map data into a fully playable Minecraft world. You pick any location on Earth, your hometown, a major city, a natural landscape, draw a rectangle around it in the app's map view, point it at your Minecraft save folder, and click "Start Generation." The tool fetches geographic data from OpenStreetMap (a free, crowd-sourced map of the world, similar to Google Maps but open) and elevation data, then automatically builds that terrain, roads, buildings, and natural features as Minecraft blocks. The result is a Minecraft world (compatible with both Java Edition 1.17 and newer, and Bedrock Edition) that reflects the real layout and topography of the chosen area. You can customize settings like the world scale and whether to generate building interiors. The tool is built in Rust (a fast, low-level programming language) and uses Tauri for its graphical interface. It runs on Windows, macOS, and Linux. You can download a ready-made release from the project's GitHub page or compile it yourself. A web-based version called MapSmith is also available if you want to generate smaller worlds without installing anything. Arnis is aimed at Minecraft players and fans who want to explore or build in accurate real-world settings, it has been featured in press outlets and used in educational research for topics like flood awareness. The project is licensed under the Apache 2.0 license, meaning it is free to use and modify.