Super Metroi (スーパーメトロイド, Sūpā Metoroido?) is an adventure video game developed by Nintendo R&D1 and Intelligent Systems and published by Nintendo for the Super Nintendo Entertainment System video game console. Super Metroid was the third released game in the Metroid series of video games. With its 24-megabit cartridge size, it was the largest game available for the console at the time of its release.