WebAssembly for Native Games on the Web
For the game developer audience, WebAssembly represents an addition to an already long list of supported target platforms (Windows, Mac, Android, Xbox, Playstation, …), rather than being a new original platform to which projects are developed from scratch. Because of this, we’ve placed a great deal of focus on development and feature parity with respect to other existing platforms in the development of Emscripten, asm.js, and WebAssembly. This parity continues to improve, although on some occasions the offered features differ noticeably, most often due to web security concerns.
Read the full article: https://hacks.mozilla.org/2017/07/webassembly-for-native-games-on-the-web/
I believe WASM will rock the HTML5 game again!