My game (Avantus: The Island, Part I) is listed under "Uncategorised", though during the original upload I had specified "Fantasy". I've tried updating multiple times, but nothing changes. Any help on this would be much appreciated.

It isn't clearly communicated, hence your confusion (I wondered the same thing when I first uploaded my game).

But... Alex Warren, who runs the website and created Quest, reviews each game submitted to thew website. If you remove the category name in the URL and type in Sandpit, you will be brought to all the half-*ss, test upload, and inappropriate titles that have been uploaded. Because there were/are so many, each submission is reviewed before being put into its requested category - or gets thrown into the sandpit if it doesn't pass muster.

That explanation makes perfect sense; I just thought it might be a temporary error, or something of that nature. Thanks for the reply.