It's basically just what it sounds like. You navigate through a maze in host rooms and go from room to room, usually three rooms long. Everyone who makes it through (which means everyone who participates) gets a prize. Last year, it started out very unorganized but got better in the end. Two years ago, it was just unorganized the entire time.
Basically, the main problem was/ is that the room is so cluttered with people and furniture that there's nowhere to click to move.