During the 8-bit gaming era, Nintendo initiated a form of quality control based on limiting the number of titles to appear on its console, the Nintendo Entertainment System .  The company required each licensee company to limit the number of NES titles it published per year. As a result, companies like Acclaim created divisions such as LJN to produce more products than Nintendo would have otherwise allowed.  Konami also utilized such workarounds with its division Ultra . Even after Nintendo dropped this rule in the early 1990s, Acclaim continued operating LJN, which published several titles for the Super Nintendo Entertainment System and Game Boy .  Although Acclaim distributed the video games, they were self-published and marketed by LJN.