Nintendo's Super Mario Bros., released for the Nintendo Entertainment System in 1985, became the archetype for many platform games. It was bundled with Nintendo systems in North America, Japan, and Europe, and sold over 40 million copies, according to the 1999 Guinness Book of World Records. Its success as a pack-in led many companies to see platform games as vital to their success, and contributed greatly to popularizing the genre during the 8-bit console generation.