I've been building the games I've always wanted to play. It used to take months to make something like Medieval Building Simulator.
Now you tell some idea of what you want and AI gives you a better thing than what you originally imagined. Then you go into a rabbit hole... simulate productivity, sales, customer, cash flow, materials for the building, make it curvy, make it pop up in 3D, populate it with NPCs, give your NPCs wages and background, write a dialogue with the ghosts of Christmas. It ends up being a game in itself.
It's good fun. It costs me $20 and I can do it and deploy it from my phone.