I'll re-mention Suikoden 1 & 2 as those games just plain rule.
Alundra, only the first though, I beat the 2nd, but, sheesh, it might've been better if done with the first games engine.
Lunar 1 & 2, yeah yeah, I know, Sega CD forever, or perhaps the Saturn versions, but, these were the first versions I played, & I absolutely love em'!
Arc the Lad 1-3, I recently finally played thru them on my Vita, great games, probably enjoyed 3 the most. I ended up picking up 4 & 5 for PS2 even though I heard negativity towards them. I also got the HD version of 4 on PS4 when it was on sale.
Beyond the Beyond. Say what you will, I enjoyed it, even with all it's quirks, including IIRC a high encounter rate.
Breath of Fire 3, never got around to playing 4, maybe someday. I also picked up the PSP english version.
Castlevania SotN. Didn't see anyone point this one out, kinda surprised! It's not my favorite Igavania, that would be Dawn of Sorrow or Portrait of Ruin, but it's a great game!
Crash 1-3, & I picked up the recent remake.
Fighting Force, played thru this 3D Streets of Rage many a time!
Final Fantasy 7, twas my first FF, so, it holds a special place in my heart.
Crusader: No Remorse. I'm sure people probably prefer the PC version. Wish No Regret came out for PS1. I think part of the reason I enjoyed this game is cuz it reminded me a little of Shadow Run for SNES.
Mega Man Legends 1 & 2 & Misadventures of Tron Bonne, finally played thru those recently on my Vita.
Mega Man 8 & X4
Metal Gear Solid, it may be half cinema, but, loved the game.
Parasite Eve, love it, but the sequel I couldn't get into. Recently played PE2 on my Vita. I do enjoy 3rd Birthday however.
Wild Arms, love it, if only for the soundtrack, but it's a great game in it's own right. I've only beaten Wild Arms 1, 4, & Alter Code F.....which is a remake of one. I swear I'll beat the others one of these days!
Vandal Hearts, great game, couldn't get into the sequels.