Video game maker Nintendo Co. and messaging app provider Line Corp. said Friday they will jointly develop mobile games featuring the popular character Mario for smartphones and tablet devices, with the first app hitting the market in early summer.The first collaboration will produce a new action puzzle game named "Dr. Mario World," which will be offered in multiple languages in about 60 countries and regions, including Japan and the United States, the companies said. The app will be free for download with optional in-app purchases.Through the tie-up, Nintendo aims to reach a large number of…READ FULL ARTICLE