The end result is an authentic translation of the game for the web, showcasing some of the best that HTML5 has to offer: canvas-rendered graphics, browser-based audio and video, CSS3 styling and the personality of WOFF fonts.
The making-of video sometimes makes for slightly uncomfortable viewing – it comes across as a somewhat contrived Microsoft advert. So I was surprised to see the Creative Director playtesting it on what appears to be Chrome on OSX in the video…
But is that enough to justify locking certain levels to IE users? It seems a bit unnecessary to me. Stay classy Microsoft!