Excellent, this is great stuff. I wish they had released a separate HTML5 Game Engine. At a glance, it looks like everything is tied pretty closely to the game itself. I've been looking at engines like Isogenic and Construct 2, but here you have a large HTML5 game larger than most had been able to demonstrate. Plus, its open source, where the previously mentioned engines are closed source and require a license purchase, although Construct 2 has pretty good documentation on how to make games. I really like what Wooga did with this.