I've seen it asked about the N64, but why not another throwback? For me, there's no contest. Breath of Fire 3. Even when I know all the puzzle solutions and how to beat ever boss easily, I still enjoy going back and playing it. Sometimes, I give myself specific challenges to make it more interesting.
Gran Turismo and FFVII
Crash Bandicoot 2
Legends of Legaia
Any of those
PS1 is one of those consoles where it's real hard to pick a favorite game--library too stronk. Though if I had to give, like, a current fave... I've dumped some insane hours into Dragon Warrior (Yeah, yeah, Quest, whatever) 7 in the last year. Between getting to disc 2 and losing my save twice, then doing my best to 100% my third save--there's some hundreds of hours.
That’s a tough one, the ones I really enjoyed were Medal of Honor and metal gear solid. Those are the ones I played most and remember the best.
Final Fantasy VII. Until my mom accidentally saved over my game with hers when I was well into the third disc. T_T
Mine is a bit obscure but its Bust-A-Groove, I loved the music and general idea of it. Wish they would bring it back though...
Dino crisis 1&2
Resident 1,2,3 survivour
Alone in the dark the new night mare
Oddworld abes oddysee and exodous
Street fighter alpha 3
Final fantasy vii
Gex the under cover gecko
If I had to choose one it would have to be Metal Gear Solid, must have beaten it about six times by now. Also enjoyed FF7 as well as the resident evil games and Silent Hill.
What an excellent system... No way I could pick just one.
Road Rash 3D and Jailbreak
Twisted Metal (2 was my favorite)
Crash Bandicoot (2 was my favorite)
Metal Gear Solid
Parappa the Rapper
Tony Hawk's Pro Skater games
Brave Fencer Musashi
These are the titles that immediately pop into my head whenever I think of the good ol days of playing the PS1 when I was younger, but I'm sure I'm forgetting some. There were other great titles I liked, but titles I would play at arcades (like Time Crisis for example). I remember we ended up getting a PS1 before an N64, which my siblings were mad about, but I honestly have fonder memories with PS1 even though the N64 had some great titles as well (Perfect Dark being my absolute favorite).