Longest Play Session

What is the longest amount of time you've spent playing a single game at once?

Mine was probably playing Animal Crossing: New Leaf for about 5 or 6 hours a couple years ago, I generally can't play a game for more than 3 hours at once otherwise. (usually it's more like 1-2 hours too at most) I can't think of another time I've played for that long at once, maybe Mario Kart.

Ugh, it's to be at least fifteen hours and that would've been years ago when I could stand that much play time with playing a game for a long time at once.

No idea, there's been so many times when I played Mario Kart 8 with people over for more than 3 hours, and several times I played Smah online with you guys for over 3 hours...
It's probably around 4-6 hours though.

Back when I was 12/13 my weekends consisted of me and my step sister playing Sims 3 for like 8-10 hours. 

A more recent example would be at the start of this year. My friends and I decided to do a "Mario Party Marathon" in which we played Mario Party 4 for about 12 hours... I think? We played all 6 boards and some minigames.

I belive it was Mario Kart Wii for 10 hours before. I can only play a game for 4 hours at a time now though.

I think my longest play session was when I first played Twilight Princess and got to the City in the Sky. It took me hours to navigate through it, I can't remember how long I played but it was probably 5-6 hours. I played online in different games a few times for about 3 hours.

I think I played Civilization: Beyond Earth for about 8 hours straight on its release day  .

4 to 8 hours depending on the game I'm playing. If I get really into it I can play it for hours. Like with Oceanhorn I played on it for a good 8 hours before I decided to save & quit for the day.

12 hours of Donkey Kong 64 when I was little. Best time ever.

I'm not too sure but I believe that I once did Civ 5 from 6AM - 11PM or something.

I've probably played Minecraft for quite a long time as well.

Maybe with TF2 as well.

Wow, was that all one game of Civ 5? And who were you playing as  ?