Just incase anyone wanted to catch up on the Mobile game set before the Prequel Game Birth By Sleep, this chap does a very good summary (I'm also adding the Part adaptation in the Movie from 2.8, which if you have time is more entertaining to watch but doesn't cover everything!):
Back Cover (Which Explains the build up to the Keyblade WAR - most of the Mobile game in a CGI movie):
https://www.youtube.com/watch?v=Ar9-S9EjIf4A video explaining the content of the the Mobile Game:
https://www.youtube.com/watch?v=bbkXWBu-RBwThen... the mobile game got updates in November & December:
https://www.youtube.com/watch?v=E5f9XnpqfQIWatching this clued me up on alot of WTF was going on with this series in this time - I'm still not happy KH put important content in a mobile game but this is by far the best way to access it and make sense of it.
Avert your eyes from the video recommendations at the side as they are containing KH3 content now! Even by the uploader
As for the game still having an utter blast. some of the Worlds in this game are the best of the series!