Well this is really hard for me, I am not the one that counts hours when I play.

But 100% sure of more than 100 hours.

• Civilization 1
• Civilization 2
• Sid Meiers Alpha Centauri (SMAC)

Not 100% sure

• Super Mario Bros, should be around there at least.
• Mario Kart DD

That more or less that. I often don't feel for playing the same game to many time. The only game that I really have loved that much is SMAC.

Starcraft

Tales of Symphonia

F Zero Gx

Mario Kart Advance

Final Fantasy Tactics Advance

Baten Kaitos

Smash Bros.

Smash Bros Melee

Fire Emblem all

Mario 64

Soul Calibur 2

DBZ B3 

Final Fantasy VII

Final Fntasy X

Final Fantasy XI

Final Fantaxy XII

Counter strike 1.6

Counter strike source 

Half-life 1

Dark age of camelot

World of warcraft 

Oh, fun list!

PC:

Total War series. Medieval 2 isnt at 100 hours yet, but all the others are.

Civ 1 and Civ 3

Oblivion (not completely sure i reached 100, seems i broke the game with 'invisibilityarmor' it just got too easy after that)

Morrowind

XCON series probably set me back well over 100 hours as well.

XBOX:

Amped 2

Dai Senryaku VII: Modern military tactics (dunno why, i just loved this game)

GTA: San Andreas

Soul Calibur 2 

PS2, X360: None i think.

I have like a billion games with 50 hours + though. =)

Here's my list:

Final Fantasy X (PS2)

Street Fighter II (Mega Drive)

World of Warcraft (PC) I spent more than 100 days in game time not 100 hours in this horrible drug of a game lol

Goldeneye (N64)

Mario Kart 64 (N64)

GTA: San Andreas (PS2)

Elder Scrolls IV: Oblivion (PC and 360)

Street Fighter III: 3rd Strike (PS2)

Warcraft III (PC)

Battlefield 2 (PC)

Tetris (Gameboy)

Mortal Kombat II (Mega Drive) 

The next two games that are gonna join this list are:

Elite Beat Agents (DS) and Lumines II (PSP), both are way too addictive for me to think I'll stop playing them any time soon.

KOTOR

Half-Life

CS

Red Alert

Beatmania

Stepmania

Starcraft

TTD 

Eternal Wraith (164 hours)

 http://ew.wrathgames.com

Final Fantasy X is the only game that I have played for more than 100 hours. I've done 70 hours on GTA: SA, although including me just mucking around, I may have reached 100. I rekon I'll get there soon in FF XII

• Guild Wars
• Secret of Mana (I think I've beaten this game at least 4x now)
• Zelda: Link to the Past (another I've gone through a number of times)
• Civ 3
• Super Smash Bros
• Super Smash Bros Melee
• Alpha Centauri

I'm not a 100% completion type person so most RPGs dont' take more than 50 hrs unless I decide to play through them again every few years.

pokemon series/ includes the 50 hours of play in pearl - 516 hours

GTA San Andreas - 200+ hours

I have no life