itch.io

There is little in the way of current ingame content on size difference. There are a few mentions I believe littered about (Particularly Rush and Artica). However, there is a popular mod called Hypertus which may appeal if size difference is the goal. I doubt there will be anything significant on size difference exactly but...

!!!!!SPOILERS FOR UPCOMING CONTENT!!!!

Additionally, while not directly size difference content, based on the Github actions page, the author is going to be adding a module on pills that have different transformative effects. Included in this line up is sizing up and down different body parts and changing some of the sliders of body type first in the game.