Magna Carta: I bought it to play it later. I wasn't particularly interested in it in the first place, but it was an Atlus game and the artwork looked good. It's a game you can pass over though, there are so many much higher quality games to spend your time on.

You already have DQ8 on there, which is great.

I highly reccomend the 3 'Shin Megami Tensei' games: Nocturne (best RPG of 2004, hands down) and Digital Devil Saga 1&2 (also incredibly good. I liked it more than Nocturne).

Almost anything from Nippon Ichi (Disgaea, Phantom Brave, etc) would be good for playing for a long time.