It probably depends on how exactly you define "fetish". In fact, that should be pretty much everything that turns you on sexually. And surely there will be more than just creampies? Nothing against creampies and pregnancies, I have a big thing for them too. I like that much better than facials, it's just more natural. Provided it is well integrated into the game.
However, if that doesn't turn you on without pregnancy, you won't have it easy at all. This forum alone has listed more than 8,000 porn games. It would be a lie if I said I knew them all. That is simply not possible. But I probably know all the most popular ones. And I have my favourites, which are not necessarily the popular ones.
But the games of them that really includes pregnancies, and in acceptable quality at that, i can almost count on one hand.