Ian Cheng (born 1984) is an American artist known for live simulations and worldbuilding, works that evolve on their own through systems and protocols.

In art, even though you're making a work first for yourself, you’re a proxy for the audience who might care about what you're trying to capture.
Ian Cheng, Ian Cheng on Composing with Systems
It reminds me of when Ian Cheng talks about worlding, which I think you alluded to earlier, how he talks a lot about the agency of worlds and how these worlds can have a life of their own.
Peter Bauman, Lawrence Lek on NOX and Worldbuilding