Ok I got it
I was thinking about a play house. since a lot of people nowadays are online and playing video games, it could start off as a video game. The players enter and they have are paired off and they have to play house to earn certain badges
Then when they get to a certain level they can win a real house where they play house for a week and get to keep it if they pass all the challenges. The challenges could be...the roof leaks, or a baby comes along, or theres an interferring in law.