A lot of people aren’t interested in porn games, but the setting to hide all “adult” content is not very helpful because it includes any game that is marked as adult for any other reason such as realistic depictions of violence or difficult themes like mental illness. It would be nice to not have to lump it all together.

There are browser scripts that add the ability to filter tags and it solves the problem really well because humans are good at organizing stuff like this. But simply having two categories of adult games, porn and not, would be really helpful too.

Steam has had the same problem ever since porn games were first allowed. This would help make itch more of a place where creatively risky stuff can be given oxygen while also being a safe place.

Sensitive content / mature content is self identified by the developer. You will have a massive accuracy problem for any filters here.

Itch's nsfw category is culture centric to the United States. That means nude female pixel nipples are nsfw, but gore, horror and slasher games usually are not. Not mandatory, at least.

I am not sure if Steam has a problem here. They have additional maturity settings. Like for the gore, and for mature topics.