Uncharted 2: played the story mode 5 times(on my 6th) and about 4 days worth of MP

Pokemon gold(the gb color one) about 300 hours

Pokemon Emerald: 259 hours

Persona 3 FES 100 plus  hours

golden sun 1&2: beaten both games about 6 or 7 times each(1 usually takes me 28 hours to beat, 2nd about 40)

Nice!

CGI-Quality you played 19800 hours = 825 days (day and night) = ca 2,3 years (day and night)=5 years (12 hour day)!

So my goodness, if you started gaming with NES in 1985, that would result in average ca 2.5 hours each day!

Afraid?

My ruff estimates:

Oblivion - 2000 hours.

Age of Empires II - 1500 hours

Dark Age of Camelot - 1500 hours

Warlords II - 1000 hours

Lords of the Realm II - 3-400 hours

Return to Castle Wolfenstein - 3-400 hours

Enemy Territory: Quake Wars - over 250 hours

Warlords - over 200 hours

Morrowind - 200 hours

Quake II - 200 hours

Bad Company 2 - 200 hours

Fallout 3, Dragon Age, Heroes of Might & Magic and others - around 100 hours each

Probably pokemon, Mario as a series.

It's hard to say exactly, If we're talking just one playthrough, probably FFVII which my second play through tallied something on the order of 200 hours. If you're talking combined play, Probably FFVIII, no single play through came close to 200 hours but if I combined them all I couldn't see any other game being higher, except maybe civ 3 or 1602 a.d. which I dumped countless hours into.

LOL - nice

Rough estimates, apart from any game that tracks playtime (like TF2)

TF2 - 500 hrs

OoT - 500 hrs

MK64 - 300 hrs

MKDD - 250 hrs

SSBM - 250 hrs

Pokemon Sapphire - 200 hrs

SSBB - 200 hrs

FIFA07 - 200 hrs

L4D2 - 150 hrs

Elite Beat Agents: 300 - 400 hours

Kingdom Hearts 2: 150 - 200 hours

That's it really. I don't play games for hundreds of hours unless I really love it or there's tons of replay value. I usually beat the storyline or 100% it then go to the next game which many of you seem to have trouble doing.

Super Smash Bros. Brawl - Slightly over 700 Hours.

World of Warcraft - Even though I quit playing it a looooong time ago, I probably managed to crack the 600-hour mark.

Super Smash Bros. Melee - Approx. 500 hours, maybe more.

Mario Kart Wii -  Around 450 hours, the last time I checked.

Guild Wars - About 400 hours, I guess.

Super Metroid - Over 300 Hours, at least.

Super Mario Bros. - Same as above.

Warcraft III -  Not sure. 250-300, probably.

Super Mario Bros. 3 - Same as above.

Super Street Fighter II - Somewhere between 200 & 300.

Starcraft - Not sure. 200-250, probably.

Street Fighter IV - A bit more than 200 hours.

Final Fantasy III/VII - Almost 200 hours, probably.

Chrono Trigger - Same as above.

Grand Theft Auto: San Andreas - Less than 200 hours, I think, but more than a 100 hours.

Metroid Prime Trilogy - Around a 100, if memory serves.

The Legend of Zelda: Ocarina of Time - Less than a 100.

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PS. Most of these numbers are pure speculation, and I'm probably still forgetting a bunch of games, that I've invested more time in.

(PS3) COD MW2: 13 days "/

(PS2) Pro Evolution Soccer 4: God Knows

(PS1) Digimon World 2: Like 400 hours (when I was way younger)