Unpack modified-source.tar.gz, put Emscripten 6.0.12 tools on PATH, then run bash build-web.sh. Font atlases are already generated; optional regeneration uses rebuild-fonts.py with Pillow/fontTools. This archive includes all modified engine/helper source, game data, GLM/libmodplug dependencies and original OFL font sources. Other exact compiler/dependency source archives are below. Wrapper source: adapter.js and the page HTML.