Survivor: Africa
The two starting tribes were Boran and Samburu (named after the real-life Borana and Samburu tribes). In the fifth episode, after 12 days, three members from each team were sent to the other team, in what became known as the first twist in the Survivor series. The players then knew that they must be ready for the most sudden changes; future seasons would have similar twists. Later on, the two tribes merged (combined) into a new tribe, which the players named "Moto Maji" (Kiswahili for 'fire' and 'water').