you sure it's you shouldn't play for more than 1hr straight? i've read a lot of my manuals but i never remember seeing something about leaving it on. if there is something about leaving it on i'd be kinda disappointed sad.gif
Yeah, I checked out the XBOX 1 and 360 manuals, neither mention that. The XBOX 1 manual has a line that says "do not leave the consol unattended for several hours", but nothing about how long the console should be on. I know I remember seeing it in older manuals though. Anyhow, I think the only reason that companies put that in there is that they didn't want people playing them hours on end and then dying from overheating before the warranty is up. I know for sure though that one manual did say not to use the consol for more than 1 hour at a time, cause I remember thinking "wow, I don't know anybody who has never played there system for more than one hour".
8 hours of GRAW (or any other game) is a pretty hard achievement.