Just a list of games I bumped into while looking for roms and I've played, some I haven't but read good reviews about. Enjoy!
RPG
Breath Of Fire III
Breath Of Fire IV
Chrono Cross
Digimon World
Dragon Warrior VII (haven't played)
Final Fantasy Series (any of them are guranteed to be great)
Grandia
The Legend Of Dragoon
Legend Of Legaia
Mega Man Legends (mixed views but for the most part I enjoyed it)
Monster Rancher 2
Parasite Eve
Parasite Eve II (haven't played but i loved part 1)
Resident Evil 2
SaGa Frontier
SaGa Frontier 2
Vagrant Story
Valkyrie Profile (haven't played)
Wild Arms - 2nd Ignition
Xenogears (haven't played)
(RPG - Strategy)
Front Mission 3
Kartia
Tactics Ogre
Adventure
Ape Escape
Armored Core
Blasto
Brave Fencer Musashi
Blood Omen - Legacy Of Kain
Fighting Force
Fighting Force 2
Future Cop : L.A.P.D
Gauntlet Legends
Klonoa - Door To Phantomile
Legacy Of Kain - Soul Reaver (part 2 of blood omen)
Mega Man X4
Mega Man X5
Mega Man X6
Monkey Hero
Strider
Strider 2
Tenchu
Tenchu 2
Threads Of Fate
Tomba
Fighting
Bloody Roar II
DragonBall Z - Ultimate Battle 22 (haven't played but played similar versions)
Ehrgeiz - God Bless The Ring (hybrid has a rpg/dungeon mode)
Gundam Battle Assault
Gundam Battle Assault 2
Marvel Vs. Capcom
Mortal Kombat Trilogy
Rival Schools
Samurai Shodown III
Tekken 3
X-Men Vs. Street Fighter
X-Men - Mutant Academy
X-Men - Mutant Academy 2
Pocket Fighter
Airplane - Shooter
Einhander
Omega Boost
R-Type Delta
R-Types
The Raiden Project
(Shooter - FPS)
Perfect Weapon
Point Blank
Point Blank 2
Twisted Metal 2 (sorta fps)
Twisted Metal 3
Twisted Metal 4
Just Awesome
PaRappa The Rapper
Um Jammer Lammy
Pong - The Next Level
MORE TO COME!