What game system has the most games?

Nintendo

Nintendo Co., Ltd. (任天堂株式会社, Nintendō Kabushiki gaisha) is a multinational corporation located in Kyoto, Japan. Founded on September 23, 1889 by Fusajiro Yamauchi, it produced handmade hanafuda cards. By 1963, the company had tried several small niche businesses, such as a cab company and a love hotel. Nintendo developed into a video game company, becoming what is arguably the most influential in the industry, and Japan's third most valuable listed company, with a market value of over US$85 billion. Nintendo of America is also the majority owner of the Seattle Mariners Major League Baseball team. The name Nintendo can be roughly translated from Japanese to English as "leave luck to heaven". As of October 18, 2010, Nintendo has sold over 565 million hardware units and 3.4 billion software units. Nintendo was founded as a card company in late 1889, originally named Nintendo Koppai. Based in Kyoto, Japan, the business produced and marketed a playing card game called Hanafuda. The handmade cards soon became popular, and Yamauchi hired assistants to mass produce cards to satisfy demand. Nintendo continues to manufacture playing cards in Japan and organizes its own contract bridge