This is super cool!
I am using some llm work to help me bring my mmo project (2013-present) to prod, but my project is much more about pushing the edge of the mmo technology space, and my strategy has as one of its pillars the importance of owning the IP, which means adhering to the current laws in my production pipeline, so I only use unix/linux philosophy and have the llm do small tiny things in skeleton mode so I can rewrite them enough to claim they are actually mine, which they are. Even though I intend to open source the client fully, and the assets, I have to have the copyright so I can assign it to those licenses.
Technically, according to current SCOTUS rulings and precedent set so far (hopefully better things and changes to come, but here we are), this can not be copyrighted by the person who paid for the compute to make it.
When money starts hitting these kinds of projects, the legal wolves will be soon at the door, and it's going to get messy I think. So I still support open source gaming projects, but pure agentic or vibed games are probably going to face tons of challenges in the not too distant future based on my analysis.