Breakouts: The ToDoMVC for HTML5 Game Engines
Breakouts is a project by city41 designed to help you evaluate different HTML5 Game Engines by showing an implementation of a simple but complete game (Breakout) in a number of different engines to let you get a sense of what building a game in one of these engines looks like.
On launch, Breakouts includes three version:
The code is up on GitHub and developers are encouraged to build an implementation in their favorite engine (much like ToDoMVC)