GBA and PS1 Best RPG's

[SergeantAnt]

well for ps1 CHRONO CROSS(very underrated imo), final fantasies(obviously), grandia, and legend of dragoon.
for gba... everyones already mentioned pokemon, hm. final fantasy 4! or final fantasy tactics advance(say what you will but i loved that one)

 

[captaincabbage]

Yeah the Pokemon games on GBA are damn fun.

 

[GRoXERs]

FF:Tactics series
The Final Fantasy Legend series (Seriously, the leveling system is about the best thing ever; a really good balance of grind and strategy. Also, it's the very first Game Boy RPG ever. It set the bar pretty damn high)
Dragon Warrior Monsters series (Ok, it's a mon game, but it's way, way better than Pokémon, I promise)

And yeah, only two of those series actually have any GBA games in 'em, but hey - oldies can be goodies