I've seen too many threads to count about game suggestions for PSX. So here is somewhere to compile them all into one place. I'll edit this post if people give suggestions. Those are also the only two I know. Genre Suggestions welcome as well. This is completely user submitted so if a game is in the wrong Genre please let me know the game and correct genre. If this takes off better than it is could someone sticky?
-----Action/Adventure-----
Blood Omen: Legacy of Kain
Castlevania: Symphony of the Night
Legacy of Kain: Soul Reaver
Syphon Filter
Syphon Filter 2
Syphon Filter 3
Tomb Raider
Tomb Raider II
Tomb Raider III: Adventures of Lara Croft
Tomb Raider IV: The Last Revelation
Tomb Raider V: Chronicles
-----Action/Racing-----
Grand Theft Auto
Grand Theft Auto 2
-----Action/Stealth-----
Metal Gear Solid
-----Beat 'Em Up-----
Crisis Beat
Panzer Bandit [J]
Fighting Force
-----Fighter-----
Bushido Blade
Bushido Blade 2
Ehrgeiz - God Bless the Ring
Street Fighter Alpha 3
Tekken
Tekken 2
Tekken 3
-----Flight Simulation/Combat-----
Ace Combat
Ace Combat 2
Ace Combat 3: Electrosphere
-----Music/Rythm-----
Bust A Groove
Bust-a-Groove 2 (a.k.a Dance Tengoku Mix [J] )
Dance Dance Revolution [J]
Dance Dance Revolution - 2nd Remix [J]
Dance Dance Revolution - 2nd Remix Append Club Version Vol.1 [J]
Dance Dance Revolution - 2nd Remix Append Club Version Vol.2 [J]
Dance Dance Revolution - 3rd Mix [J]
Dance Dance Revolution - 4th Mix [J]
Dance Dance Revolution - 5th Mix [J]
Dance Dance Revolution - Best Hits [J]
Dance Dance Revolution - Disney Mix
Dance Dance Revolution - Disney's Rave [J]
Dance Dance Revolution - Extra Mix [J]
Dance Dance Revolution - Konamix
Dance Dance Revolution - Oha-Star [J]
Dance Dance Revolution - USA Mix
Parappa The Rapper
Um Jammer Lammy
Vib Ribbon
-----Party-----
Bishi Bashi Special
-----Platformer-----
Crash Bandicoot
Crash Bandicoot 2: Cortex Strikes Back
Crash Bandicoot 3: Warped
Klonoa Door To Phantomile
Medievil
Medievil 2
MegaMan 8
MegaMan X 3 (Remake, SNES)
MegaMan X 4
MegaMan X 5
MegaMan X 6
MegaMan Legends
MegaMan Legends 2
Metal Slug - Super Vehicle 001 [J]
Metal Slug X
Skullmonkeys
Tomba
Tomba 2 - The Evil Swine Return
Umihara Kawase Shun [J]
-----Puzzle-----
Super Puzzle Fighter II Turbo
-----Racing-----
Colin McRae Rally
Colin McRae Rally 2.0
Gran Turismo
Gran Turismo 2
Rage Racer
Ridge Racer
Ridge Racer Revolution
Ridge Racer Type 4
-----RPG-----
Alundra
Alundra II
Azure Sky
Breath of Fire III
Breath of Fire IV
Chrono Cross
Chrono Trigger (Remake, SNES)
Dragon Warrior VII
Diablo
Final Fantasy (Remake, NES)
Final Fantasy II (Remake, NES)
Final Fantasy IV (Remake, SNES)
Final Fantasy V (Remake, SNES)
Final Fantasy VI (Remake, SNES)
Final Fantasy VII
Final Fantasy VIII
Final Fantasy IX
Grandia
Harvest Moon: Back To Nature
Legend of Legaia
Legend of Mana
Lunar: Silver Star Story Complete
Lunar 2: Eternal Blue Complete
Parasite Eve
Persona
Persona II
Saga Frontier
Saga Frontier 2
Star Ocean: The Second Story
Suikoden
Suikoden II
Tales of Destiny
Tales of Destiny 2
Thousand Arms
Vagrant Story
Valkyrie Profile
Wild ARMs
Wild ARMs 2
Xenogears
-----Tactic/Strategy RPG-----
Final Fantasy Tactics
Front Mission III
Ogre Battle: The March of the Black Queen (Remake, SNES)
Saiyuki: Journey West
Tactics Ogre: Let us cling together (Remake, SNES)
Vandal Hearts
Vandal Hearts 2
Vanguard Bandits
-----Shoot 'Em Up-----
G Darius
Einhander
In The Hunt
R-Type Delta
Raiden DX [J]
-----Simulation-----
Sim City 2000
-----Strategy-----
Deception III - Dark Delusion
Kagero - Deception II
Tecmo's Deception - Invitation To Darkness
WarCraft II: The Dark Saga
-----Survival Horror-----
Clock Tower
Dino Crisis
Dino Crisis 2
Parasite Eve 2
Resident Evil
Resident Evil 2
Resident Evil 3
Silent Hill
-----Target Shooting-----
Elemental Gearbolt
Point Blank
Point Blank 2
Point Blank 3
Time Crisis
Time Crisis Project Titan