GamersNexus: "Mozilla has spent the last year expanding and improving its support of browser-based gaming with JavaScript-derived asm.js, Emscripten (cross-compiler for C and C++ games to run in browsers), and the WebGL standard. At this year’s Game Developer’s Conference, Mozilla demoed its support for Unreal Engine 4 technology and games using the upcoming Unity 5.0 engine."
It's 2022, every browser should have this.
Apple currently requires all iOS web browsers to use WebKit, the engine that powers its Safari browser. This policy is widely regarded as anti-competitive,
Web browsers collect a massive amount of our web history data. These options can help with that.