Thanks for posting Milky Way Mooooooch!, Kromandoon. I think I nailed the genre the OP is looking for.
Quimbly does host an annual game jam for belly content without WG - the one Milky Way Mooch was in has a lot of content you may be interested in - Belly Jam 2024.
The current one is ongoing and will have a lot of content you’d like: Bloated Belly Jam.