I loved the game when I played it on the NES, and 22 years later, I loved playing it on Android.
If you loved the original Final Fantasy games (FF I, II, III, IV, VI, VII, VIII are my favorites) then I have no doubt you'll like this one.
Final Fantasy IV is scheduled to come out on the Android in Spring 2013, and I can't wait to get my hands on it.
Also, I hear rumors that FF VI is in the works for Android as well. If that turns out to be true, which I don't see why not (easy money for Square), then I will also spend dozens of hours playing that. For those who don't know, FF VI was received with critical acclaim when it came out and in 2012 IGN listed the game as the #1 RPG of all time. In other words, if you like/love these types of games, you would do well to play FF VI as well.
Finally, I hear Final Fantasy Dimensions also did well. As soon as I finish getting everyone in III to level cap and beat the boss, I'll start Dimensions up.