Re: Any Harem Pregnancy Games?
Honestly, finding quality games that feature pregnancy is relatively challenging, let alone ones that are also harem games.
There is Corruption of Champions. It's relatively old and text based. Not a traditional harem game per se, but you can play as a male (or hermaphrodite), and you can meet female companions (and enemies!) during your adventures, some of which can become pregnant by you (with appropriate story events and reactions). The game was largely abandoned by its creator, but the fans of the game finished it, and it still receives periodic updates from time to time. It's freely available online, so just google for it and it should be one of the first links.
Aside from that... well, there's Violated Heroine, but that's not really a harem game, and it's never going to be finished. There's RyonaRPG, same issue, plus the quality leaves a lot to be desired. There are also several "run a breeding factory/whorehouse for monsters/women/monster-women" titles around, some of which are fairly well done, but I don't think that's what you're looking for.
Edit: Nevermind, you're not looking for VNs. I don't really know of many games that fit your description, sadly.