I'm going to talk about games that
I like and exclude any Final Fantasy titles from the lists because you're probably thinking of those being a member of a Final Fantasy fansite and all :p
So for the
DS:
The World Ends With You
I LOVE the soundtrack, and I absolutely love all of the characters. The gameplay is fantastic and I've never seen anything like it. It's the most unique RPG ever. I have only two complaints:
1. Getting the secret reports after finishing the game is nearly impossible! I still haven't done it. IT'S HARD ;_;
2. I cringe whenever Beat says his line that goes something like "Yo, that was TIGHT." Everything else he says is bearable.
Ace Attorney series
My favorite DS series ever ever EVER. It's currently my number one obsession.
Hotel Dusk: Room 215 and Trace Memory/Another Code
These and the Ace Attorney series don't have that high of a replay value, being visual novel-types but they are some of the best games the DS has seen.
Final Fantasy III
Yeah, I know what I said, but this is a really good game to carry around with you on the go! A nice little (big) RPG in your pocket.
PS/PS2:
Mobile Light Force 2
Very cheap. You can probably find it for like, five bucks somewhere.They KILLED IT during the translation, taking out the ENTIRE PLOT and much more. Also the cover is misleading and has nothing to do with the game. At all. It's still pretty fun, though, and I never played the original so I don't know what I'm missing. It's not an RPG, but I thought it was worth mentioning.
Phantasy Star Universe
Good soundtrack, and I love the variety of neat-o weapons. I have never played it online, though, so I can't comment on that.
Threads of Fate (not released outside Japan or North America)
This is my favorite Square game ever. My favorite
game ever. My first RPG, too. It's extremely hard to find, though, seeing as it's a PS1 game that was overshadowed by Square's more popular games. It has a wonderful soundtrack, two slightly different stories, and two playable characters. My only complaint is that it's short, and the implied sequel was never made.