that's a hard question gwenibe, its hard to narrow it down. can i narrow it down to a series.
my top 2 series:
final fantasy- they have always set the bar high. creating a unique world for each game, with great characters, wonderfully designed envirnoments, and soundtracks, and of course final fantasy are master storytellers. they really did a lot of firsts through this series.
fav. game of ff: ff-10 and ff:12
dragon quest- they figured out what works, and they are staying true to it, never really changing their style. got to love those monsters. besides i grew up watching dragon ball so, the familar designs, were great.
forgot to mention what i've played.
DQ: vii, DQ IV, dragon quest monsters: joker
fav game: DQ: iv
as u can see i am a big fan to the old timers. i grew up with games, and i still continue to play them we, as gamers owe alot to these big titians. could you imagine if they were never made, i don't think the rpg world would be the same.