Many thanks to you as well! Nina and Randy did wonderful work, and I feel bad for having to render the clouds so brightly tinted for fg/bg contrast reasons. The sprites were even more gorgeous in their original palettes.
I did some testing in Vivaldi (coincidentally on Linux too) and didn't run into any problems there, but I'm intereested in what might cause the game to fail to load. If you can still make that error happen, and assuming you know a bit of web dev, I'd appreciate if you could take a look at the developer console. The game doesn't really surface many errors in the UI, so any information about what went wrong will probably only appear in the console.
As for the gamepad support, I've read that it is wonky in Firefox on Linux. I was able to read the left thumbstick of my Xbox 360 pad, but all the other buttons and the right stick were wildly out of order. It's disappointing if the left stick isn't even reliably working across different gamepads. But yeah, apparently that's better supported on Windows.