Like the title says, which games really drew you in so much that you couldn't put the controller down for hours?
This topic isn't about the games you just liked or even those that stood out for you but those that really made you want to blow off all your responsibilities, eating and sleeping just so you could get a few more hours in to it.
For me I will admit that these days I find video games increasingly uninteresting. Maybe it's because everything feels familiar or I'm just growing out of it I don't know but these days I really just play games to pass time rather than as a passion and it's increasingly feeling like a time waster.
That said there have been a few titles that have kept me up until the late hours of the night or even early hours of the morning although few and far between compared to before.
Ni No Kuni - Although I felt like taking a break from it after around 20 hours of gameplay those 20 hours were consecutive and I think the longest I played it was 6 hours straight which is something very rare these days where I usually play a game 30 minutes to an hour before moving on to something that feels like I'm actually doing something.
Sleeping dogs - I decided to play through it again and this time I was just as hooked as the first time playing it for hours every day until I had 100% it. Although it's true this game doesn't particularly excel in anything the fact that it is an open world martial arts epic set in hong kong will always make this game stand out above most others for me and it's great for virtual tourism.
Assassin's creed: Brotherhood - Probably not the best game of the series nor even that good of a game (it's not bad but it has many faults such as too sensitive freerunning, gamebreaking bugs, it didn't make me care about the story at all, felt very repetitive by the end) though somehow it had me hooked playing it for hours on end completing all the side stuff. The only explanation I have for getting so hooked by this game is probably that Italy is as beautiful as ever in it and that when you did the side stuff it felt rewarding. Ever since I played Skies of Arcadia as a kid I absolutely fell in love with the base-building feature and the fact AC:B had something similar (where you could buy and upgrade shops and fix locations somewhat building yourself a real estate empire) had me spend hours earning enough money to buy all the locations.
Yakuza 4 - similar reasons as sleeping dogs. A brawler with an interesting mafia themed story and virtual tourism galore and a ton of side quests to complete always has me putting hours in to this game when I pick it up.