or can i do 12 on friday and 12 on saturday?

I believe you do not have to play 24 hours straight, you can make up the hours later.

well thats good to know i already got a donation and don't want to skip out on my duty because i get tired. "no mom i can't clean my room i got to play videogames"

well i don't know... but to me the point of a marathon is to start....and keep going till you finish, otherwise it would just be a.... 12 and 12 hr marathon or something....

I'm sure some one with more knowledge will set this straight....

Im sure you dont HAVE to do 24 straight but like Bloodlut said, the point of a marathon is to do it all at once. :)

scatman and bloodlut are right you have to try to do it its only if you cant go on no matter what no just because you got a little tired thats why you get energy drinks and coffee

ill give it a go

You do not have to do all 24 hours at once if there is something preventing you from doing so! A lot of the fun comes from trying to do it though! Do what you can and take breaks when you need to!

Good luck!!

yeah im gonna go 24 hours straight play through uncharted and then sports games and halo for next 14 hours