This is a port of Cataclysm: Dark Days Ahead to the browser using Emscripten and WebAssembly. It is based off of the 0.F-3 release. Play it here: https://rameshvarun.github.io/cdda-web/
First, install the emscripten SDK from https://github.com/emscripten-core/emsdk
./build-scripts/prepare-web-data.sh
./build-scripts/build-emscripten.sh
emrun index.html