So There was a Ao No Exorcist Flash game that was playable supposedly until 2015 on the ao no exorcist official anime website. According to a User on Tumblr Named Hootie who replied to my original tumblr post with screenshots and information they dug up,
basically it seemed to be a sort of fruit ninja kind of game where you’d tap to kill the coal tars, it had a yukio mode and a rin mode that opened up as you progressed where you’d win wallpapers as a reward
(i also found another blog post discussing it, not much information there, but some people in the comments there were talking about the missions it had in order to progress if that's of any interest)" - User Hootie on Tumblr
Basically what is known so far:
#1: its basially fruit ninja but with rin, yukio taking out demons #2: this game is completely separate from dammed cord and the other title (and it was actually released) #3: it could be played though the animes official website