It sounds like you're looking for the Weight Gain Game hosted on .
Some notable examples you'll likely find (depending on when you search): weight gain game on itch.io
The devlogs on itch.io allow players to see the "growth" of the game itself, often influencing future updates. The Best Sub-Genres to Explore It sounds like you're looking for the Weight
High-quality artwork, roommate romance paths, progressive weight updates. Simulation / Visual Novel Simulation / Visual Novel The Weight Gain Game on itch
The Weight Gain Game on itch.io: A Deep Dive into a Unique Gaming Niche
Games where dragons, orcs, and mages use magic to bypass the limits of the human stomach. 🍕 Tips for New Players
To help me find your next favorite game, are you looking for protagonists, and do you prefer active gameplay (like an RPG) or just reading a story ?