Original engine and asset sources, exact upstream browser patches and Leaf adapter. Concatenate numbered source parts before extraction. These downloads are separate from gameplay.
Native build: Emscripten 6.0.8, apply upstream-browser-patches in numeric order to the original source. Follow the supplied build reference to import matching precomposed release graphics, run build-scripts/build-emscripten.sh and build-scripts/prepare-web.sh. Normal website builds reuse pinned frozen artifacts. Main code/content CC BY-SA 3.0; separately licensed components retain their notices.