The side interaction you're talking about requires modeling the inside of houses, child models, animations for those child models, and parenting would have to s

The side interaction you're talking about requires modeling the inside of houses, child models, animations for those child models, and parenting would have to somehow provide some tangible and meaningful systems. Modeling the inside of the house seems like the easiest part. I absolutely expect to see AI-generated models deployed in games in the near future. Not necessarily on demand, but at least to fill out buildings on a map like GTA. I also expect it to be used for building character models. The rest I expect to be hollow, dreamlike, and bizarre. Sooner or later, though, it should be feasible. If AI can eventually be smarter than a human, then it seems inevitable that a 'game' could be created on-demand.