Ferris

Click the game to hand it the keyboard — the border lights and the line under the stage says so — then steer with W A S D. Click anywhere outside it and the keys go back to the page.

Eat every pellet, keep away from the four things chasing you, and the maze refills one level harder. Getting to level four is a real afternoon.

A Bevy build is a large module, and the first version of this page started fetching it the moment the page opened — which spent a visitor's data on a game they had not asked to play yet. So the button is the trigger, the size is printed next to it, and the readout counts real bytes while they arrive.

What wasm-bindgen emits is about 55 MB, and nearly half of that is a name section of Rust symbols that no browser reads. scripts/ferris-pack.mjs drops it, checks that what is left still validates, and writes brotli and gzip copies beside the result. The server hands over whichever one your browser said it could read — about four megabytes — and the file is named after its own hash, so a second visit fetches none of it again.

This is also the only page on the site that sends its own Content-Security-Policy. Compiling WebAssembly needs 'wasm-unsafe-eval', which permits exactly that and no other route from a string to running code; every other directive is the one the rest of the site sends.