Colonization: Research on HTML Browser Game
List of Game engines and just some findings:
https://github.com/bebraw/jswiki/wiki/Game-Engines
Some research links for the frontend:
Simple Tile Engine:
Canvas Engine:
http://t3n.de/news/html5-frameworks-entwicklung-browserspielen-299238/
http://www.html5gamedevs.com/topic/1043-tile-based-maps-pixel-movement-collision-detection-woes/