Someone named SonicMon over on Deviant Art is currently working on a video game version of My Little Dashie. How do you make a game out of fanfic about some dude raising Rainbow Dash? RPG Style of course! It sort of plays like a mix of those old Tamogachi toys, Pokemon, and a choose your adventure game.
Right now it's primarily an engine demo with a bunch of random features thrown in, but it looks like there is some potential here for something neat later on.
Check the game out here! The creator is looking for feedback in comments for future editions of it, so be sure to leave him some. This is far from a completed project, so expect a bit of revamping.