Developers can now see an early preview of experimental WebAssembly support in an internal Microsoft Edge build with the AngryBots demo, alongside similar previews for Firefox and Chrome. WebAssembly is a new, portable, size and load-time-efficient binary format suitable for compiling to the Web.

In the video above, a demo running in Microsoft Edge uses the preliminary WebAssembly support in the Chakra engine. The demo starts up significantly faster than just using asm.js, as the WebAssembly binaries have a smaller file size and parse more quickly than plain JavaScript, which needs to be parsed in the asm.js case.

Read more about WebAssembly on the Microsoft Edge Dev Blog.