'adult game' to be exact as this is an adult game pirating site, meaning that sexual content is not a hard requirement for games to be on thsi site. Adult games can have sexual content, or can have nudity & eroticism only and they're still good. Also not saying there isn't any sex in this game you get to bang McGonagall, so there's that.
Adult games have either sex or extreme violence in them. If not they are not adult games.
Lets take "Dragon Age Origins" which was an adult game and had "sex" and " extreme violence" in it and compare it to an non adult game with "erotic" and/or "violence" in it.
Singles 2 Flirt up your life had erotic in it as the whole game is like sims but with the goal to actually hook up with someone and have sex and form a relationship etc.
Dragon Age had a FSK 18 Rating.
Singles 2 had a FSK 12 Rating.
FSK is the same as PG or NC-17 former X Rating.
So an adult game gets a (You must be 18 or above to buy this game) Rating.
A non adult game gets a (you must be 12 or above to buy this game) Rating.
Your explanation for Adults game is therefore Wrong and the explanation about this website/forum as well.
This is a Forum for Sexual (VN/Games in General) and all kinds of kinks. An Adult Site. If there is only Erotic or blue balling it maybe is to satisfy a certain kind of kink but the majority is about Sex and fucking in all kinds of ways.
This is not a website for Erotic content especially if the Dev of a game already promised sex. So they can not wait till (insert your year here) to release said sexual content to the end of time but have to deliver or lose all their patrons.
Most games on this site who link to patron who have no sexual content whatsoever are soon gone as they dont make a single penny from that shit boring game.