In a new blog post on Wednesday, Microsoft’s research department debuted a new generative AI model called Muse that it describes as a “breakthrough” for gameplay ideation.

Despite a decade of AI growth, Cook says, there's no method yet to measure what exactly an AI model has captured and what it has not. Muse is able to provide grainy gifs of one fairly simple video game based on seven years of footage, but it is not a solution for holding everything about a game or every possible outcome of what players could do.