Just curious. I found my old Pokemon Silver game and loaded it up recently. To my complete shock, I've put 210 hours into that game since I got it back in 2000. That's the longest game save I've ever seen that I've put into one game. How about you?

I put over 200 hours into one save file of Oblivion. I completed damn near every quest, with some exceptions. Thats just one save too. I had plenty of others that approched the 50 hour mark and my most recent close to 100. I've never invested more time into a single game... Unless RPG Maker counts.

Over 300-400 hours on Tales of Vesperia total. It might be more with Suikoden 2, but I can't be sure.

56 hours during my first run of Lufia III GBA, plus another 40 hours during my second run (I did not beat the game).

50+ hours with Lufia IV: Ruins of Lore. (At least 3 different runs).

It's too bad Animal Crossing doesn't track hours otherwise I'd have you all beat.

70 hours on Final Fantasy X.

some notable ones:

Atleast over 150-200 hours across all my playthroughs of Lufia 2.
About 60 hours on Lufia: The Legend Returns (And that is just from playing the story, long ass GBC game).

Probably over 200 hours total on Oblivion
About 100 hours on Fallout 3
I maxed out the time on Star Ocean 2 when I leveled all my characters to 255.

Do I really even need to say what mine is? I mean really?

in a single save: Borderlands - My hunter is at just under two hundred hours. My other three added up almost match it.

spread across all saves - Star Ocean: The Second Story (especially if you count Second Departure!) I would make a conservative guess of it being over seven hundred hours in all my saves. Fairly sure I never hit two hundred hours in a single save but if I did, it was back in my freshman year of high school. I would have to hook up my PS1 and V-Mem to find out.

150 hours for fallout
100 plus for borderlands
130 for ff13
billions for rpg maker
100 for ff7
i think my mass effect file is up close to 100 or over.

ive got plenty of ps1 and 2 saves that are not quite 100 but close (70 hours or more).

lots of long games out there. the more side stuff there is the more i seam to spend playing it.

440 hours...

Dissidia...