Not sure what that use case is. Why would you need all of that? As an individual, if you are just trying to build a basic game with your kids you don't need to build a whole engine nor a world class technical team or a huge dataset

You can either use chatgpt or something more basic like openjam.ai or something specialized like rosebud.ai

Maybe the people at rosebud.ai have been doing what you are suggesting to build their platform