17 hours once, well depends on how you count it.
I had been sick from school for 3 weeks, and we had 2 texts (written at home), 1 test, and 1 presentation.
So I didn't sleep that night, but did 3 weeks of work in that time.
You could count it as 9 and 8 though, if you count a day from midnight to midnight. 17 hours is if you count by wake-up to bed-time.
Another time I had to work for ~ 10 hours, as I had been sick for 2 months, and had a math exam (mock-exam) the following day (a monday).
http://www.vgchartz.com/games/userreviewdisp.php?id=261
That is VGChartz LONGEST review. And it's NOT Cute Kitten DS







