the seiken densetsu series

[hopper]

yes they are old but the following games have to be my favorite
seiken densetsu (aka final fantasy adventure) for the gameboy
seiken densetsu 2(aka secret of mana for snes, tho i didnt play that one much)
seiken densetsu 3(snes, no official english relese/title)

[Khodhum]

Secret of Mana is fun, although the battle system is a little...broken. They did a good job of fixing it up in SD3, although they sort of sacrificed some speed in the process. And I've never played the original Seiken Densetsu.