"find all documents, descriptions, walk through of game XYZ, generate a consistent and declarative document that another agent would read to recreate the game without using existing IP or protected data, do not reuse art but describe general details with the ability to extend and add specifics later. focus on functionality first, then mechanics and then later art and gameplay. generate a 10 page document that will follow MVP to Production quality gameplay"

give it a link if you want

Based on what I've seen, there's a good chance this would work today (though Anthropic recently added some restrictions around this sort of prompt) -- try it!