Hard gen for me as I'd effectively defected to the PC realm by this point. I know titles like Elder Scrolls and Fallout came out on these consoles... but they are PC games(!) having said that, I'm sure some have the sole experience of playing them [painfully] on consoles with little to no hands on with the machines the game were intended for, so it's a tough one as we're then celebrating the game as a game, rather than feats made specifically for this generation of consoles. The lines get blurred like that for a lot of titles that will probably amass positions in the top 5, if not top 3.
Ironic that by this point, arcade titles were nearly all indistinguishable from their home to console, whilst there then became the gulf in what the console version of PC titles became.
Would be interesting to see what console specific IP's look like as a list at the end of this round.