asm.js really shines for usecases like this, the fact that they did the port in a week is truly remarkable. GFX/Audio/Multiplayer all works fine, but loading times are pretty slow on Chrome, but for a first version this seems great.

Edit it seems pretty playable in firefox and chrome, don't notice much of a difference performance wise. Now please make a reverse case for PNaCL and pepper.js and we can all get really excited :)