Not really a game, just a thing you do as kids. Let's see if we can get all the way across the room without touching the floor. Walking across the sofa and chairs is easy, but sometimes there's stuff on the end tables or coffee table, and some surfaces will not support your weight. It's the most fun if you're at someone's house where you actually enter the room from one end and exit another way, like into the kitchen or something. If you're lucky, there will be a sofa you can jump off of, into the kitchen. Yes! Score!
Sometimes it becomes clear that it can't really be done without touching the floor at some point. Not enough furniture or whatever. But the floor is burning lava, which you can actually withstand for a maximum of three seconds or whatever the house rules are, so you risk burning your feet and go for it. You gotta do what you gotta do.