Step One: Watch Mary Rose Cook Live Codes Space Invaders from Front-Trends. (The second worst conference name ever?)
Step Two: Fork this gist.
Step Three: Respond to this question in your fork: What is one approach you can take from this Mary's code and implement in your project?
The tick( ) function is something we could certainly use in building snake. That might help us sort out some of the functionality that's within our index.js. I also really liked her Keyboarder function. We could use that to hopefully clean up key event listeners to be a little dynamic and maintable when changing and adding different modes that require different keys.
Step Four: Totally Optional: take a look at some of the other forks and comment if the spirit moves you.