Sadly I'm stuck right at the beginning where it tells me to check that graphics acceleration is on. Tried it in both firefox and chrome, I had it on in both of them.
I'm on Linux, so I'm guessing that's an issue, even through the browser sandbox :(
We're seeing some issues (very rarely though) were some combinations of browsers and GPUs can't run webGPU (which is the tech we're using to render the visuals) - you might but one of those cases. Did you try either downloading the game here from itch or get the demo on Steam?