What Xbox game have you put the most hours in

What game have you spent the most hrs playing...either on original Xbox or 360?

I want to say Gears of War 2? Probably over 400 hours into multiplayer. Then next is Skyrim

1.Borderlands 2

2.Skyrim

The first Black Ops. I played the crap out of that game, still my favorite entry in the series to date. 

Battlefield 3

Far Cry 3

Tomb Raider

Forza Motorsport 3 first with many many many hours spent playing, with Lost Odyssey a close second...

Now playing Forza Motorsport 4 which I can imagine claiming the top spot, unless I decide to drop it and start playing Dead Red Redemption and its DLCs!!

Forza Motorsport 4 I should think. With FM3 and NFS Shift not that far behind!

Fallout 3/New Vegas

Gears 3 Multiplayer - Horde Mode

Skyrim

on the original Xbox, probably The Elder Scrolls 3: Morrowind, and later picked up the GOTY edition with the 2 expansionslamprey263

Fallout 3/New Vegas. Nothing else even gets close.

Gears of War 3. Put about 500 hours. 

Fallout 3/New Vegas. Nothing else even gets close.

Blueresident87

Same.

Gears of War, I got my rank pretty high up in the leaderboards. I think I got up to the 300s. (I consider that high :P)

Mines gotta be call of duty world at war its like the only game apart from shenmue 2 i really did play a lot

shenmue 2 took me countless hours to complete but worth it and i completed it 10 times

Battlefield 3.

I just got a 360 for Christmas, so I only have abou 80 hours logged so far. Definetly going to be more though.

Probably off the reservation on this one, but for me it was Chromehounds. That multiplayer game ate up alot of my time.

Probably put the most hours into Forza 3 or Forza 4.

Fallout New Vegas.

I don't know since 360 doesn't track stuff like that since it's sh*tty.

Battlefield 3 of course.

Anything Fallout

Anything Mass Effect

I've put thousands of hours into these games.

Either Rockband 2, Black Ops or Oblivion

Probably Black Ops II as of recently.

Halo 4.

Dark Souls

Halo 3

637 (or somewhere around that) - Fallout 3

392 - Minecraft

249 - Fallout New Vegas

The first Black Ops. I played the crap out of that game, still my favorite entry in the series to date. 

Vari3ty

Same here, definitely my favorite Call of Duty game.  Other than the Call of Duty games, I've put a ton of time into Oblivion, Mass Effect, and the two Fallouts.