I went to check this out, and my first two questions are how is this significantly different from Code Combat, and any idea why quick play isn't working. I'm actually trying to play from a school network and it doesn't seem to work. I'll come back and edit my comment latter with more full impressions when I actually get to check it out.
I'm sat next to these guys at the moment - they're working away fixing some server errors to cope with the high load.