When there are 8 to 12 players left in the game, the two tribes merge. When they merge, the two tribes come together to make one new tribe. From this point, Challenges are won by one person. The merged tribe also chooses a new tribe name and makes a new tribe flag with materials given by production. There was no merge in "". The Koror tribe had won every immunity challenge, and members of the other tribe, Ulong, were being voted off one by one. When there was one Ulong member left, they simply joined Koror.