First off, I would like to say that I have watched the show, but would NOT consider myself as a brony.
Anywho, this game is pretty cool. I like how there are 16-bit graphics, like old school SNES games. The gameplay is straight-forward: use the arrows and spacebar to talk or use it for actions. The few missions on this game are pretty straight-forward also. It's kind of cool that some of the music is used from the show, but changed so it has the 16-bit feel.
As for the endings...
The Super Filly ending is OK. The way to get it is the easiest of the 3. Just hand out invitations, and then go to the party. Then fight the dragon. (Dragon?!) Once you figure out its fireball pattern, it's pretty easy to beat it. Yay, Ponyville is saved *rolls eyes* lol.
The Muffin ending is strange. The way to get it is to make a "baked bad" (watch the show to see what I mean), and then give it to Derpy. I like this ending, but like I said, it's very strange.
The Blank Flank ending... is not for everyone. You can do some research on your own to find it, but do so at your own risk. It makes references to some of the creepypastas about MLP out there, and has pretty graphic content. It is activated between 11p and 6a for a reason. I can see why it would give some people out there nightmares, but not this guy. Don't get me wrong though, the first time I played this ending, I was like "WTF is this shit? Those damn things are creepy as f***". But, I had to play it multiple times through to experience the goodness some more. *evil laughter*
I'm sure if you put more time into it, it would have turned out even better. Great job though! :)