I dont think they do, on his profile page he said that he doesnt do weight gain and that they are all stuffing games. Hope this helps and sorry if u wasted ur money, its the reason im not paying.
For all the main girls, you have stats page, it includes weight, so you can track their weight gain. Weight gain is not the main concept of my games, but slight weight gain is implemented. If you want the weight gain, choose Sally, she will be the biggest at her top weight
