How to make HTML5 games like Google Doodle's Doctor Who?

Question

I searched over the codes on the front page of Google Doodle which plays Doctor Who HTML5 game. I wonder what game engine (if necessary) does Google team use?

Answer 1

The best technical article I found referring to Google Doodles is this one:

Case Study: Building the Stanisław Lem Google doodle

This was written by Marcin Wichary, a Sr User Experience Designer at Google who contributed to a some Google Doodles Pac-Man, Jules Verne, World’s Fair

As for the article it seems that every doodle will have its own engine (maybe there is some base code though). The article focus on the development of the Stanisław Lem Google Doodle that ran on Google homepage in selected countries on November 23, 2011.

The source code for the engine is available at this page