My gbjam3 entry: http://gamejolt.com/games/platformer/dropsomething/31337/
Implemented using Phaser
Music composed (by me) using Soundbox and added as plain javascript (song.js) and using their javascript "player".
Graphics made by me, using Piskel, build as a node-webkit app. Graphics are imported using data-urls.
Everything is being loaded as plain javascript. No external assets.
You need Grunt. Just read at their page how to install if not already done.
run npm install
Build a debug version using: grunt (default task) - It will also fire up a static server and uses live-reload.
Build a distribution version using: grunt build - The distribution is located in game/