At GungHo Festival 2015 (ガンホーフェスティバル2015), GungHo announced to start the Anime Production for its iOS and Android Game App "Divine Gate“.
There has been no further info on the release date or crewyet, but the below original sketch gives us a little sample of what to expect!
We´ll keep you in the loop for fresh info!
https://youtu.be/Rxw2A4eYtpw
Source: http://ioryhamon.com/archives/7965987.html