Survivor is a reality-competition television franchise produced in many countries around the world. The show features a group of contestants deliberately marooned in an isolated location, where they must provide basic survival necessities for themselves. The contestants compete in challenges for rewards and immunity from elimination. The contestants are progressively eliminated from the game as they are voted out by their fellow contestants until only one remains to be awarded the grand prize and named the "Sole Survivor."
Through its seasons and various international versions, Survivor has maintained the basic premise of the game despite several new rules and gameplay twists introduced in later seasons. In the game, the contestants, known as castaways, are split into tribes and assigned separate camps at the filming's location, typically a tropical setting. As a tribe, the castaways must survive the elements, construct shelter, build fire, look for water, and scrounge for food and other necessities for the entire length of the game, which is generally around 39 days for most versions including the American version, but has ranged from 20 days (as in the French special seasons) to 153 days (as in some seasons of the Turkish edition). In the first half of the game, the tribes face off in challenges, some for rewards of food, shelter, or luxury items, while others are for immunity, preventing the winning tribe from having to go to the next Tribal Council. At Tribal Council, the tribes discuss the events of the last few days with the host asking questions, and then vote out one of their own players, eliminating them from the game.
In the second half of the game, the tribes are merged into a single tribe, and challenges are played at an individual level for individual rewards and immunity. At subsequent Tribal Councils, those eliminated start to form the jury, who sit in on all subsequent Tribal Councils but otherwise do not participate. When only two or three castaways remain, those castaways attend the Final Tribal Council, where the jury is given the opportunity to ask them questions. After this, the jury members then vote to decide which of the remaining castaways should be declared the Sole Survivor and be awarded the grand prize of $1,000,000 and title of "Sole Survivor."