'Mario Kart Tour' App Drops <br />on iOS and Android Devices.<br />Fans of Nintendo's mobile <br />racing game can play it on the <br />iPhone, iPad and iPod Touch.<br />Android devices also now carry 'Mario Kart Tour,' which <br />is free to play.<br />Purchases will be available within <br />the game that are used for upgrades.<br />You must also pay to unlock certain features.<br />Through online rankings, players of <br />'Mario Kart' will be able to view <br />each other's results worldwide.<br />Every two weeks, Nintendo will also <br />cycle its "global tour" section <br />of the game.<br />Courses will feature aspects of <br />real-life cities and levels <br />from previous games
