I haven't been as enamoured by a game as I am with Fallout 3 since playing San Andreas and Rome: TW. F3 is the only game in recent memory that has me thinking about it even when I'm not playing it and I know if I do sit down to play it, it is going to swallow hours of the day and I'll forget to do something important.
Which game has had you so besotted that you've lost hours or your life and not even realised it? How long have you spent in one session of play time?
Note: WoW doesn't count. We all know that particular game is Coded Crack.

Oblivion, and pokemon games for the gameboy *hides in shame*

Oblivion, Counter Strike: Source and I used to play on this one server for hours on Call of Duty 2.

I'd say oblivion of course. Considering I just did the mage guild, and kinda felt like i was playing a whole game on its own. And I've just managed to finish Farcry 2 in roughly a day and a half.

Pretty much any FPS where I have just have to get the next checkpoint or cutscene.
That and the Disgaea series.

note: these are the most play time in one setting. oblivion (12 hours), 2moons (16 hours), Morrowind (10 hours) fallout 3 (8 hours) dead rising (10 hours, we'll actually that was for the lightsaber, not imersion)

Morrowind and Fallout 3

Okay *deep breath*, don't hate me for this but......Viva Pinata 1 and 2......holy crap....so many hours wasted....seriously....more than a JRPG and i'm STILL nowhere near beating the game

Kingdom Hearts 2 which I spent 7 hours playing and the Playstation 3 in it's entirety.

STALKER: Shadow of Chernobyl.

Just so damn immersive. I would say it kept me from doing homework for school, but I don't do homework for school anyway.

I probably sat and played that game for... maybe... eight hours in one sitting. (On weekdays, too, when I get home from school around 4pm. The only time I stopped would be because I had to eat, but I usually just took bites of food between the parts I needed to be focused on.)

animal crossing, trying to get all the songs...more than a years worth of effort right there

I spent hours of my life playing Championship Manager 4. It's insane how much a game like that can hook you. I remember when I fractured my hand early on in 2007, I was off work for about 4 weeks. During which I clocked up nearly 110 hours in one week on Final Fantasy XII. You do the math..

Fallout 3 is also keeping me busy. I waited until I had played some of my Christmas games before putting that in the console. And I was right to. Before I put that in, i was disk swapping more than I have in a long time. As soon as that went into the machine, it stayed in for 3 days straight.

Football Manager 2007 had me obsessively compulsively checking bbc sport for new talent and actually debating for hours if i should put out a full team for europe, even though i won't get past the group stages, or if i should save the team so i can give pompey a proper thrasing next week.

But damn it was good when the game got buggy in 2013 and portsmouth crashed out of the premiership while southampton won the treble two years on the trot. And *in my head* it was all to much for redknapp and he decided to paint the wall an interesting shade of brain.

I had gone through Resident Evil 4 about 15 times one summer and continued to play it every now and then for a good year.

counter-strike:source...HOOLY SHIIIITSHITshitshitshit....aah loved that sound,and I'm getting re-hooked to that

p.d.can you actually say "enamoured"?¿ looks like a bad translation from spanish

The_Deleted:
Which game has had you so besotted that you've lost hours or your life and not even realised it? How long have you spent in one session of play time?

I was horrified to find my playtime on Burnout Paradise was up to 200hours. Oh dear. I still haven't done all the online challenges ~ This is because getting people to join in with things you want to do is hard. Finding people who can do all the things you can do at the same time is even harder.

My wife is thoroughly bored of Burnout.

A friend of mine once played C&C for 12 hours on the most uncomfortable stool you could imagine. (I'm a mechanical man, indeed.)

Hoooo boy.

Any good turn-based strategy game will keep me locked indoors for a month. Right now it's Fire Emblem, but Advance Wars, Armageddon Empires, Battle for Wesnoth, Final Fantasy Tactics A2, Master of Orion, Civilisation, Colonisation and Heroes of Might and Magic have all sunk their claws into me at one time or another.

Other than turn-based... hmm. When Baldur's Gate came out I could think of nothing else, although strangely I've never played the sequel. Must fix that.

Gears of War and the entire Halo series - shoot me if you want, but they are SO awesome :D

When I played Final Fantasy 12, I just did the basic story stuff and a couple of side missions and my playing time was around 100 hours. That was the moment when I thought to myself, "I really need to get a life". Also, Morrowind ate up quite a few evenings but it was on a PC so it didn't feel like such a black hole. For me, being in front of the TV feels like more of a disconnect.

Wind Waker, Pokemon Pearl, Timesplitters 2 and 3, and Skate. Oh, and all the old THPS games, what the fuck.

Civilization Series, any Pokemon game, any final fantasy game, Legend of Zelda: Twilight Princess.

I'll just give the obligatory answer of Fallout 3 and Oblivion. Sucking entire weeks out of my life between 'em. Used to be that way with Guitar Hero type things but I find myself playing them less and less these days.

It's my Oblivion addiction that's responsible for keeping me away from MMO territory. I've ploughed nearly 200 hours into my current save and still have two thirds of the Mages' Guild, most of the Daedric Shrines and a load of miscellaneous quests to do. So it's fair to say there's been a lot of aimless messing around... and that's on the 360 version, so no mods. I'm intending to upgrade my graphics card (this weekend, actually) and get the PC version just for the sake of dicking around with mods. I've already missed enough study to virtually guarantee that I'll fail this year of my degree, so I might as well enjoy myself while I'm wasting the rest of the year...

That said, I could do the modding on Morrowind which I've already got and am able to run without an upgrade... but having only played for about 20 minutes I'm obviously not that familiar with it, which I'd like to be before getting into mods an' whatnot.

Fraser.J.A:
Hoooo boy.

Any good turn-based strategy game will keep me locked indoors for a month. Right now it's Fire Emblem, but Advance Wars, Armageddon Empires, Battle for Wesnoth, Final Fantasy Tactics A2, Master of Orion, Civilisation, Colonisation and Heroes of Might and Magic have all sunk their claws into me at one time or another.

Other than turn-based... hmm. When Baldur's Gate came out I could think of nothing else, although strangely I've never played the sequel. Must fix that.

Heroes of might and magic 3, such a cracking game.

Guild Wars, I spend many hours on that just grinding myself retarded.

But other games like Final Fantasy 12, or Morrowind, or Team Fortress 2 had be obsessed.

Most recently:
Bioshock. 20:34 to 8:34.
All time:
Tf2. 16 hours.
Favorite time eater:
Aquaria and Python. (python the programming language, though that ain't a game it still swallows time en masse)

LoZ:Oot. 12 hours of play from 11 'til 11 in the summer of '07!

Oblivion and Fallout 3.

Diablo 2. Neverwinter Nights.

Both these games are awesome. I think that there was a time where I could play NwN from 8 am to 8-9 PM with stops only to eat something. In summer, of course, because during school year I can only play Diablo 2. But it does consume a lot of my time.

Other than that, I loved playing Megaman Battle Network series on GBA, especially 3rd one.

TF2 - Ah, yes, I bought the game. I lost 6 hours. And another 6 day later. Great online FPS.

Battlefield: Vietnam and Battlefield 2. Sunk SO many hours into both. Played on ladders, the whole shi-bang.

Single-Player: BioShock and DarkMessiah of Might amd Magic. Would play those for several hours without realising what time of day it was.

And Pokemon Blue. FTW.

Morrowind (hell two years of continuous play), Oblivion, Neverwinter Nights (once went to a bar, got back and thought "ah let's play a bit of NWN". I played till it was light out again), Halo 3 Matchmaking.

Phantasy Star Online ep 1 and 2, Twilight Princess

GTA Vice City. Best GTA game ever made.

Heroes of Might and Magic 3. Been playing it solidly since it came out (1999). In fact, I'm gonna stop everything and go play it now!

Civ 4 and FF 12. With Civ 4, three friday nights in a row i play from 10pm till about 3am. And FF 12, I played 150 hours before i got bored and decided to do the final boss ight.

Sporadic:
I'd say oblivion of course. Considering I just did the mage guild, and kinda felt like i was playing a whole game on its own. And I've just managed to finish Farcry 2 in roughly a day and a half.

Farcry 2 is heavily eating into my time. My xfire has logged 27 hours so far, so in real terms I've probably played close to two days. Fortunatly I can't game for more than a few hours at once or I start feeling queasy, so I've not missed anything important.
Doom 3 had me enthralled for a few hours when I first got it. Unfortunatly this was when I had the house to myself, and was between the time when there is sunlight and is not sunlight. So when I finished playing I was in the computer room with no lights on in the house. Couldn't play it for some time after that.

Hitman 1-3 trying to get the silent assassin title.