Go on an educational browserify adventure!
First install node version 0.10 or later.
Once you've installed node, you will have an npm command.
With npm do:
npm install -g browserify-adventure browserify
If you want to play offline, make a new directory then do:
npm install uniq brfs through2 domify stream-combiner sprintf \
quote-stream split browserify-shim
Now just type browserify-adventure to play!