This is the way it works on itch: If you directly search for my game robotsexpartymurder and aren’t logged in, or are logged into an account that isn’t set to automatically show mature-flagged content, you first see a screen saying (something like) “This game contains adult material… are you sure you want to proceed?” and makes you opt-in. It doesn’t censor, it just prevents the game from coming up automatically in searches and gives an “are you sure?” gate to access it.
I have no problem with this, because otherwise they probably wouldn’t be able to allow this sort of content to be available at all.