I've asked before and was allowed before but I want to once again make sure whether or not a NSFW game would be allowed.

I know the reach would be smaller but that's just the kind of game I like to make, and I'm not really here to WIN anyhow.

Yep, the guidance hasn't changed. You just need to follow the same rules as itch requires, like marking it correctly and any warnings you can put on the page is always good.