well one of the ones last ear was that each house had to make their own desktop background. And we all had to follow certain rules to what we put on it. then when the deadline came, we all had to sumbit our backgrounds and the judges woould give us points for which ones followed the rules the most and which ones they thought looked the best. and then whichever house won that challenge would decide what the next challenge would be. And it would keep going from there.