The Dink Network

Pluses--You get to play unusual characters, you get to visit a familiar map, you get a cool spell, the (mostly FF2) music is pretty good, the plot is very interesting, and there are unusual combat challenges (like surviving for two minutes while getting a very cool special attack or trying to break through a magical wall while guards appear one by one).
Minuses--The only real negative in this game, which is a major one, is that there are lots and lots and lots of bugs, many of which get you trapped or confused or freeze the game.