Twenty-two and a half hours, actually. Qualcomm's gaming marathon is nearing its end right now. Thirty-two gamers set out to break the Guinness world record for the "longest video game marathon on a tablet" at 2:30PM PT yesterday -- when we popped in this afternoon, 26 were still standing (well, sitting), a couple having fallen to that human weakness that is sleep. Those Galaxy Tabs that were still in use, however, had certainly seen better days. More photos of the event, which caps off at 4:30PM PT today, in the gallery below. All of these overtired gamers are competing for a grand prize of $20,000 -- more than enough to buy a nice new screen shammy.