The app has DarkMode and many websites nowadays are incorporating DarkMode capabilities but itch.io still doesn't have a way to turn on DarkMode on the website without logging in first. I think it would be a good idea to add it.
I don’t think it’s a browser problem. If there is supposed to be an auto detect for the system setting of darkmode, it’s not working because other websites are working with that feature and if it is still working I still think that it’s weird the override is only available logged in. (On my phone when I opened this convo from the Mail app with darkmode enabled, it was in light mode)