What games compelled you to play through the campaign more than once? Whether it be for the story, achievements, or beating the game on a more difficult level. Mines are listed below.

2x: God of War, God of War:Chains of Olympus, Final Fantasy Tactics, Final Fantasy X, Kingdom Hearts 2, Final Fantasy 8, Mario series(NES and SNES), Mega Man series(NES and SNES), Legend of Zelda series(NES and SNES), Warcraft 3 and the Frozen Throne, Shadow of the Colossus, Metal Gear Solid, Resident Evil 2

3x: Final Fantasy 7, Metal Gear Solid 3

More than 3x: Teenage Mutant Ninja Turtles(SNES)-me and my brother loved playing the co-op

2x: MGS4, RaC: Tools of Destruction, God of War II, RaC: Size Matters

Multiple times: RaC: Up Your Arsenal, Ratchet: Deadlocked, Warcraft III, Age of Empires II, The Frozen Throne, Age of Mythology, Populous, all of the Pokemon games on GB/GBC/GBA

Probably more, but I can't remember them right now.

2X: Oblivion, LoZ TP, Kirby Canvas, Amped 3, Sonic Adventure 2 DC, Sonic Adventure 2 GC, Mairo Galaxy, Layton.

3X: Mass Effect, Skies of Aracdia, Each Pokemon I have..., Pyshconaughts.

7X: Gotcha Force

13X: Tales of Symphonia....

There are probably about 8 or more so for 2X..

2x: Max Payne, Serious Sam SE, Age of Mythology,Hitman:Contracts,GTA Vice City, KOTOR, Fallout 2,Grim Fandango

3x:Jedi Knight 2:Jedi Outcast, Ocarina of Time,Super Mario 64, Half Life( 1 &2 both) , Metal Gear Solid, NFS: HP2,Majora's Mask

Multiple: Chrono trigger, Link to the Past, Super Metroid(all 3 annually), Super Mario : Bros(1 &3), World( 1 &2), Doom , Quake 2, Contra, Super Contra, TMNT (3&4) , Symphony of the Night, Paper Mario, Advance Wars ( 1& 2)

chrono trigger 15+ times

legend of zelda (nes) 10+times

tales of symphonia 5+ times

chrono cross, final fantasy 4,6,&9, maniac mansion (nes) 4+ times

These are mostly really short games, but here are my estimates for what I can remember.

Super Mario Bros. 1 (hundreds if not thousands of drunken speedruns)
Super Mario Bros. 2: The Lost Levels (just a couple of times)
Super Mario Bros. 2: SMB USA (dozens of times)
Super Mario Bros. 3 (dozens of times)
Super Mario Land (2-3 times)
Super Mario World (dozens of times)
Super Mario World 2: Yoshi's Island (2 times)
Mario 64 (3 times)
Legend of Zelda (3-5 times)
Legend of Zelda II: The Adventure of Link (2 times)
Legend of Zelda: A Link to the Past (2 times)
Legen of Zelda: Link's Awakening (2 times)
Mike Tyson's Punch-Out!! (2 times)
Metroid (2 times)
Kid Icarus (2-3 times)
Abadox (2 times)
Contra (dozens of times)
River City Ransom (5-10 times)
Mega Man 2 (5-10 times)
Mega Man 3 (3-4 times)
Super Double Dragon (5-10 times)
Teenage Mutant Ninja Turtles: Turtles in Time (dozens of times)
Final Fantasy 1 (2 times)
Final Fantasy 4 (3 times)
Final Fantasy 6 (4 times)
Chrono Trigger (2 times)
Star Fox (2-3 times)
Star Fox 64 (2-3 times)
Metal Slug 3 (3-5 times)
Monster Party (5-10 times)
Out of This World (5-10 times, so fucking amazing)
Doom (5-10 times)
Doom II: Hell on Earth (5-10 times on co-op with straight up modems in the 90s)
GoldenEye 007 (20-25 times unlocking every cheat for everybody at my high school)
Grand Theft Auto 1 (3-5 times)
X-COM: UFO Defense (3 times)
Kirby: Canvas Curse (2 times)

^     :O

Uhm.. Super Mario 64 and Metroid Prime.

i have beaten morrowind,oblivion,ff7,ff8,ff9,ff10,ff10x2,grandia 2,grandia 3,lost odyssey,blue dragon,enchanted arms,uncharted,resistance,gears,halo,halo2,halo3,call of duty2,call of duty 3,call of duty 4,zelda:oot,zelda:twilight princess,doom,myst,riven,shivers,mario 64,banjo kazooie,kameo,viva pinata,legend of dragoon,brave story:new travelor,tales of the world:radiant mythology,unreal,unreal2,actraiser,dragon quest 8,tales of vesperia,lost planet,rayman,resident evil:code veronica,resident evil2 and others i cant think of right now. all of these games i have beaten at least 4 times each.

Okay, that's it.  I'm getting this game for DS.  Seriously everyone's played it multiple times.  It must be good.

OT: It's rare I even finish a game 100% let alone do it multiple times.  Only Freedom Force (PC) that I can think of.

Hmmmm, I'm not a big replayer of games, but of what I can remember

4x Suikoden II

3x Final Fantasy Tactics Advance, most Pokemon games, all the Monkey Island games, Portal, Quake II, Silent Hill 2

2x Suikoden V, Suikoden, Suikoden IV, Shadow of the Colossus, Broken Sword I, Final Fantasy VII, PoP Sands of Time