The NES was the highest selling console in the history of North America and revitalized the video game market. Mario of Super Mario Bros became a global icon starting with his NES games. Nintendo took an unusual stance with third-party developers for its console. Nintendo contractually restricted third-party developers to three NES titles per year and forbade them from developing for other video game consoles. The practice ensured Nintendo's market dominance and prevented the flood of trash titles that had helped kill the Atari, but was ruled illegal late in the console's life cycle.