I was curious how big I can actually make them, here are some renders of a random test character. The main problem is in the stomach area where the belly should hang. Because I’m pushing shaping modifiers past their limit and because these modifiers are meant for sizes where the belly doesn’t really hang that much it causes that are to look really unrealistic. While arms, legs even the face fat I can make bigger easily, the belly here is probably the biggest I can make it. At this size it starts giving problems when posing but I could reshape it for a specific pose if I had to.
(I’m not spoiler tagging these because it’s not an actual character and so that people can easily decide if they will be interested in a game with this size as the max)
Looking at some pics of real people, it seems this would be around 300lbs for a 5’4" person, so there’s that when it comes to actual numbers.