Hmm, running the in-browser version in Firefox on W11 only displays the stone cursor, a black background and the music. Toggling fullscreen doesn’t show anything else either.
Then tried in a Chromium-based browser but it didn’t show anything past the loading screen and prevented escaping the cursor using Esc key so had to close the browser via Alt-Tabbing.
I’m assuming this isn’t commonly reproducible since can’t see other comments about it. Running on a decent gaming system so wouldn’t expect it’s hardware related. Might try the standalone version sometime 👍