Try it here: http://www.stagexl.org/example/game/escape
This game was developed with Adobe Flash and later ported to HTML5 by using the Dart programming language and the StageXL library. The similarity between ActionScript and Dart made it surprisingly easy to convert the as3-files to dart-files. The StageXL library provides all the DisplayList and Sound classes you need to port Flash code. In the end the port of the game only took a few hours.
Credits to www.funwin.com for providing the Flash sources and the artwork.
To learn more about Dart and the StageXL library, please follow these links: