Why do you need webassembly for that, since this game already works great right now?

So that you can write in something saner than JavaScript, for starters.

You can already compile C/C++ (and I think Rust) to JavaScript via Emscripten.

Yes, you can use Emscripten with Rust.

For more CPU demanding games, that is. Like AAA games.

Isn't that the gaming experience Flash already brought?

You had to install Flash though.

It was really nice to see browsers simply incorporate slow but steadily all the APIs that made Flash worth its plugin install (canvas, opengl, webaudio, input devices, sockets). Instead of battling head on with it they simply made it pointless since you now have the same capabilities inside the engine.

> You had to install Flash

That's a choice by the browser, just like wasm.