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I'm aware it's fuzzy.

I meant, games whose tags would normally make them blocked by the "don't show me adult content" filter, but are viewable in a tag search.  (I'm also aware that games tagged with something like 'sex' does not mean there is actually sexual content; accurate tagging is a whole separate issue.)

If there are games hidden from general search by the adult content setting - those games should not come up in a more specific search or tag search. I'm not concerned with where itch.io draws the lines, but the lines should be the same no matter what kind of search is being done.

Tags do not make them blocked, I think you meant that they normally would be blocked by the setting, because they are marked in their meta data as adult.

You are concerned that there might be tags one does not know what they mean and suddenly they unlock the adult content. Eroge is the only one I can think of. For that matter, even nsfw and other common adult tags, since we are talking about juveniles and at that they might not even be fluent in english. Otherwise, the tags are what adult games use to make them visible for people looking for that content. And a few explicit tags. The surprising thing is more, which typical adult tags do not ignore the setting.