Researchers from the IT University of Copenhagen have developed a test neural network called MarioGPT. With its help, anyone can create levels for Super Mario Bros.
The neural network is based on GPT-2, trained on Super Mario Bros. itself. and on Super Mario Bros.: The Lost Levels. According to the researchers, MarioGPT is able to make the level for the game easier or more difficult on request by adding the right number of pipes, platforms and enemies to it.
MarioGPT developers have posted the neural network code on GitHub. Nintendo has not yet responded to their project in any way.