A handful of games have been programmed for the Fairchild Channel F, the first console to use ROM cartridges. The first known release is Sean Riddle's clone of Lights Out which included instructions on how to modify the SABA#20 Chess game into a Multi-Cartridge.[4] There is also a version of Tetris and in 2008 "Videocart 27: Pac-Man" became the first full production game for the system since it was discontinued.