Play NetHack in your Browser!
BrowserHack is the port of NetHack to JavaScript by @coolwanglu.
BrowserHack is truely impressive, as it is a port of NetHack to a "new" OS platform, which is then compiled using the LLVM frontend and the Emcripten backend. The net result is a legendary C-program running in your browser. (With other UI goodness done by @coolwanglu.) See relevant Hacker News thread.
My contribution is just writing a short Pulumi program to host it.
# Dependencies
npm install
npm run build
npm run lint
# Deploy to Pulumi. You'll need to edit the code
# to change the domain settings, etc.
pulumi stack init browserhack-demo
pulumi update