Menthol:
Recently? Assassins Creed (innocent slaughter ftw!)

Of all time... Probably Pokemon. I've been playing that since I was about 9. I remember when silver came out I was ecstatic. I must've dedicated over 200 hours to those games...

I feel like I've failed as a gamer somehow for never having played a Pokemon game. I've never even seen a Pokemon game.

CoD4 multiplier. I stay at my cousins house, we link up 4 xbox 360s and don't move for hours on end. It is somuch better than just playing randoms online, you need friends to make it great. Pokemon Silver for the gameboy, where did my youth go? Oh, yeah, all 3 legendary and several level 100 pokemons.

eve online. I have never played a game more than this.... And I still play it.

civilization, just one more turn.....

I'm almost ashamed to say it, but I have actually called in sick to work to play WoW. (this was a couple years ago, though) I think that took the cake about the time it took my youth and ability to sleep before 3am.

WoW has got to be one of the most stupidly addictive games ever. Nowadays I lose track of time playing COD4 multiplayer and TF2. I tried getting into Oblivion and it bored the crap out of me, which is probably for the best.

BillBarilko:
WoW has got to be one of the most stupidly addictive games ever. Nowadays I lose track of time playing COD4 multiplayer and TF2. I tried getting into Oblivion and it bored the crap out of me, which is probably for the best.

Oblivion suffers a little sandbox overload sometimes.

WoW is one of those games that I absolutely refuse to touch. I know that there is zero chance I will not get addicted to that game, and I really like a lot of other things about life besides sitting in front of a computer. Like sleep. And...kittens, I guess.

Monster Hunter Freedom 2 for the PSP, LoZ: Ocarina of Time and Majora's Mask, ALL the Metroid games as well as Final Fantasy 4 (FF 2 here in the States).

Paper Mario: The Thousand-Year Door.

"Okay, just till the end of this chapter. Okay, let's just watch the intro to the next. Well, maybe to the first save point? Oh darn, I was supposed to stop after this. Well, the next save point isn't so far away. Come on, the chapter's almost over now. Oh dammit, my alarm clock goes off in less than two hours... well, I'm not getting any sleep tonight anyway, I might as well keep playing! Hmmm... so, this seminar thing I'm supposed to go to... I'm allowed three absences in one semester, aren't I?"

The original Doom ate my life for about a year after I discovered it. I'm still addicted to the old Wolfenstein games. A friend of mine had me hooked on a little shareware game called Space Empires III for a while, and every now and then I start jonesing to play FFX.

Has anybody here downloaded Carcassonne for XBLA? I think it's based on a board game, the idea being to build cities, cathedrals, farms and roads by piecing randomly selected tiles together in a domino fashion. It can get incredibly competitive with a friend, and has so far become an addiction for me and a flatmate. We were going to fire up Halo 3 Co-Op, but ended up playing Carcassonne for 4 hours straight, right up until 3 in the morning. In recent memory, nothing even comes close to the addiction I have with that game.

Civ1. X-Com comes as a close second. Both of them were terrible for dragging me back for "just one more turn" / "until that research/base is done"...

-- Steve

Pathetically obvious and kinda lame -.- but WoW. Once I got trapped, I could not reemerge into society until the guild disbanded.

I have not found anything that life draining as that. It would honestly be, from 6pm till 5am of WoW, sleep for 4 hours. Wake up. WoW while doing other stuff (doesn't count) Start again at 6.

Not exactly the most AMAZING addictive experience ever. But definately the reason why I seem to have lost an entire year of my life

rayxofxsunshine:
I'm almost ashamed to say it, but I have actually called in sick to work to play WoW. (this was a couple years ago, though) I think that took the cake about the time it took my youth and ability to sleep before 3am.

=P I know how you feel. I missed an important University Interview because I had actually forgotten.

Barring MMOs the most addictive games:

a heavily modded TESIV: Oblivion, spawning massive armies of low health daemons, arming myself with scripted spells with large areas of effect and weapons that dismember enemies on contact i spent so much time on that game making massive fights and fighting them and downloading and installing various mods which changed the entire way the game was played.

Final Fantasy 7 and 8. the amount of effort put in to get that gold chocobo for knights 13 or finding those damn adimintium peices for Lionheart was consuming. but paid of so nicely when i did epic attacks which did so much damage that they dominated even the final boss in one fell swoop.

Half life 1 and 2 mods. from TFC, to CS, to DoD and their source counter parts, i have played most of them since their release and still frequent them to this day. i kind of lump them all togeather because they are basically all in the same, just providing diffrent flavors of the same game.

WoW and Pokemon. Counted up, I have roughly 80-90 actual days of play time on WoW and I've probably put in at least 100 hours on at least one Pokemon game for each generation, (Red/Blue generation, Gold/silver, etcetera).

WoW - I got a subscription just after me and my girlfriend broke up and my study had crashed. I breathed that game and can still name any pre-Burning Crusade item by stats or description, as well as drop location. I'm fairly clean now though, one raid per week, maybe an instance or two in between.

Dungeon Keeper - First game that I actually dreamt about a couple of times. My 13 year old mind was obsessed with building the perfect demon army in the perfect dungeon.

Baldur's Gate - I still play BG2 from time to time. That's an addiction that will never go away.

Pokemon Pinball is still the best pinball game to date, and the most addictive game in my case.

WoW and the Elder Scrolls games. Not that I didn't enjoy it.
I don't mean to brag, but I tend to finish games quickly, mostly because I play them obsessively if I really like them... and I'm always a little disappointed when it's over. So I prefer games that go on for a long time and require a lot of time investment - thus my love for RPG's and to a lesser extent MMORPG's (mostly because I wish I could get rid of the other people playing).

Addictive ?

Tetris*
Bust-A-Move*
Diablo 2 since Patch 1.10
Puzzle Quest
TES : Morrowind
Meteos
Alpha Centeuri (always preferd it instead of Civ)
Pokemon (R&B, G&S)

*on every kind of system

Currently, I'm getting addicted to Gunz Online, as well as Tekken:Dark Resurrection on PSP. The latter I play EVERY DAY: to and from school, at home, even at night when there's nothing else to do.

I'm also quite drawn to Sid Meier's Pirates on PSP and Katamari Damacy on PS2.

super smash bros melee about 3 years after it came out i suddenly got addicted to it and it was collecting dust before that

tf2 just warps my time away from me

sadly, any destroy all humans game... it was just too much fun to throw tanks at innocent people... WITH YOUR MIND!! >:O especially after you throw a tank and the person lives, i always loved repeatedly smashing the baddies with the same vehicle

blockout for pc, its like 3-D tetris for those of you who may not know, do not play if you have exams. Oh no, I just realised I have a copy, must. not. play...

Totally have to agree to the sonic adventure 2 stuff. Chao have taken so much of my life (on both dreamcast and cube).

The videogame i'm most addicted to would probably have to be Total Annihilation. It is forever installed, and gets played at least once a month.

As for games I have been addicted to, but since broken the habit:
Unreal Tournament, pokemon (any), worms (any), Uplink.
I think i'm generating an addiction to flash-based tower defence games, too...

The game i'm most addicted to that isn't computer-based is D&D. I have probably spent about the same ammount of time playing D&D as I have playing any videogame.

Everyday Shooter has eaten away at my life of late.

Unorthodox titles? FFX was very addictive, after the difficulty level was turned up (Hello Seymour!).

Guitar Hero 3. Lynching in 3...2...URK! *struggles*

Rock band, Vampire the masquerade bloodlines, gears of war, goldeneye, Pokemon (rb gs) and *drum roll*

GTA IV, I don't remember the last time I couldn't beat a game within a few days...

Senaro:
WoW and Pokemon. Counted up, I have roughly 80-90 actual days of play time on WoW and I've probably put in at least 100 hours on at least one Pokemon game for each generation, (Red/Blue generation, Gold/silver, etcetera).

WoW is cocaine, and Pokémon...well, over 210 hours of FireRed did it for me, then I had my fill.

Geometry Wars. I play 2 rounds of that game everyday.
Guilty Gear X2#Reload: The Midnight Carnival. Only if friends are around

Oblivion recently. I spent years of my life on Warcraft and Warcraft 2 though. I've also spent months trying to discover every last secret on games like Doom and System Shock. But my most obsessive gaming achievement ever (don't know if this counts as an "addiction" but it's pretty bad!) was playing Super Street Fighter 2 for four months straight until I'd got a run of thirty-two perfects in a single game (on a Genesis console, therefore no save feature) - beating every single combatant without taking a hit or blocking a special move. You'd have to go some way to beat that!

At the momment guitar hero 3

but of all time i think it was call of duty, warcraft or oblivion

Programmed_For_Damage:
ESIV: Oblivion. Once I fire it up the hours seem to fly by.

i have now officialy unlocked all the achievements to this game. it's very addictive and one of the best games ever

Forgive me if it's aleardy been said but Final Fantasy XII. I had over a 170 hours before I left my husband and he sold my game, my PS2 and "Lost" the memory card. -_-

Also Legend of the Dragoon. Almost 60+ hours on that, and I've still got to find all the Star Dust. I'm not sure what happens when you do...

Last game, Parasite Eve. Seven bonus rounds of replay time, and I STILL can't beat the final Eve...

you know, i'd have to say guitar hero 3. it is such a great game and i'm still playing it, even though i've beaten it like 6 times. i play with my friends, which makes it even better because i totally pwn them. but when rock band for wii comes out, i'll play that even more. but, overall, guitar hero is sooooooo addictive

This has been done before. There' s a magic little thing called a search button.