Found this fun little thing on the interwebs.
Basically, you and three others have to solve puzzles in your own corner to generate "life" for each other. You cannot save yourself, only the one in your clockwise direction, and thus the person before you has to save you.
If anyone wants to kill some time, join my room
PS. Don't be worried about the headphones / sound thing. I know it seems like one of those cheesy loud scream noise things at first glance, but it's not.