Multiplayer game where you control one pixel and build figures of varying complexity together with another players.
The stack consists of Node.js, socket.io (both on server and client) and node-static to serve static assets. Deployed to Heroku.
I coded it in a few days, the code is crappy, but there are some tests :)
$ npm install
$ ./node_modules/.bin/nodeunit test/
The game was a huge success among my coworkers: