From one Godot dev to another: make sure to enable "SharedArrayBuffer support" from the "edit game" menu on itch. It should be under Embed options -> Frame options. This will make the game playable in browser!
I don't know the deal with "Cross-Origin Isolation", but I ran across the former issue when I was putting my first game up on itch. In the meantime, I'll be playing and rating the Windows version instead :)
Thanks for the advice! We actually already had that flag set on itch. I have made a version locally that doesn't use GPUParticles or extensions so I can build a version without thread and extension support enabled. This seems to help with performance and compatibility a bit but I'll upload this build after the two weeks period have ended :) Hopefully the windows version worked well, I exported it from Linux and could only test it in Wine beforehand
