The Satellaview, a satellite add-on for the Super Famicom, housed ephemeral games, including F-Zero, which was broadcasted to Japanese homes in the 1990s. The memory cartridges used to store game data would report themselves as empty after each broadcast, making it difficult to preserve the content. However, some untouched memory cartridges were found and used to re-create some of the lost content. With the help of VHS recordings, machine learning tools, and manual re-creation, a mod called F-Zero Deluxe was created, featuring new race tracks, racing machines, and the ability to race against previous runs. The project is a notable feat of game preservation, although there may be concerns about Nintendo taking notice.
https://arstechnica.com/gaming/2024/02/f-zero-courses-from-a-dead-nintendo-satellite-service-restored-using-vhs-and-ai/