Under One Roof (2002)

Reality style game show hosted by Rob Nelson. In this seven-week series set in a luxurious beachfront home on a tropical island, five families with (two) teenage children compete in a series of contests. The families live for the duration of the contest in a large four-bedroom house on a remote Fijian island. (The bedrooms were originally assigned via a race to see which families could get to the house first.) The sole surviving family got to keep the house, the series was put on "hiatus" (taken off air basically) before the end of it's run.