What's up with people on the whole pregnancy thing?? can we just get a developer to actually make the game first before blasting him with this nonsense request for once?
Well, tracking my own personal path, it started with the game Violated Heroine. A community built game which was generally amazing in terms of content- scenes, combat mechanics, visible costumes (mix and match pieces too), etc. It also had a highly fleshed out pregnancy mechanic.
And honestly, from there, we were left to drift. Thus is the fate of relatively specific fetishes- it is hard to both get content, and to get it the right flavor. Few games could live up to VH's quality, and pregnancy mechanics rest in that awkward realm of extra features- not high enough priority to put in at the start, highly prone to weird bugs, and likely to just get some half hearted simplified system tacked on at the end.