MMO mining with jetpacks!
Tested on the latest Chrome and Firefox. Move around using the arrows keys or AWSD, click near your character to dig.
There is a backup server at http://jetcraft-ricardobeat.dotcloud.com/ in case the app is down.
The first three columns are blocked for edition to protect newcomers.
node.js, socket.io, coffeescript, canvas. map is a node buffer.