I can help ya with a decent playable rpg list
Nes : Final fantasy, Dragon warrior 1-4, Destiny of an Emporer, Ultima: Quest of the Avatar, Gargoyle's Quest.
SNES : Final Fantasy 2/3, Chrono Trigger, Tecmo: Secret of the Stars, Breath of Fire 1/2, Super Mario RPG (the game Im currently playing atm).
SMS : Ys, Miracle Warriors, Phantasy Star, Ultima IV.
Genesis : Phantasy Star 2-4, Sword of Vermillion.
PS1 : Tales of Destiny 1/2, Dragon Warrior VII, Alundra 1/2, Suikoden 1/2, Breath of Fire 3/4, Final Fantasy (Origins, Anthology, Chronicles, 7), Chrono Cross, Xenogears, Legend of Dragoon, Lunar 1/2, Arc the Lad.
PS2 : Dragon Quest VIII.
Sega CD : Vay, Lunar 1/2.
Saturn : Magic Knight Rayearth, Albert Odyssey.
This is a start. My definite favorite genre is RPG and I enjoyed almost everything listed on here.