Later today around noon in Japan, Square Enix will release the very first Final Fantasy game as a mobile port. In celebration for their Final Fantasy portal app (another new app that will come out along with the port; will allow Final Fantasy fans to keep track of game news/updates), the game will be free in Japan only for a limited time until one million downloads has been reached. It will also be available for sale in other regions. Here are some revealed screenshots below.
Official Website: http://www.finalfantasy.jp/ffpteaser/