Nintendo has announced its first official smartphone “game,” The Wall Street Journal reports. Expected to debut in March 2016, the first new release by the famous video game developer will be titled “Miitomo” and will be a free-to-play app with in-app purchases that can be used to buy “attractive add-ons.” According to Nintendo CEO Tatsumk Kimishima, future iOS games released by the company will be pay-to-download…