If you choose the "netorare" tag when you search with tags in the latest updates it shows 60 pages worth of games. If you add "interracial" to that it drops down to 15 pages.
Now that's games that include those tags, not focus on it. I can count on one hand how many of these games are focusing on interracial routes. So I'm really not sure where all those "thousand times" come from, or the idea that it's a cliche. Because if that's a cliche imagine how people feel for 99% of the female characters in all of these games. Most of them usually end up being a different shade of the same slut.