The final four castaways battle for immunity by crawling through spider-like web tunnels to retrieve wooden puzzle pieces. After one person is voted out, the remaining three players participate in the last immunity challenge, in which they must keep several balls circulating on a curved track without dropping one. The last pair standing are questioned by the jury before the seven members vote for the winner.
The five remaining castaways maneuver a maze to win an overnight trip to a plush residence that includes a meat-lovers feast. For immunity, an endurance challenge requires each person to balance on thin board pieces attached to opposing walls. One person is voted out at tribal council. Jeff Probst is the host.
The six remaining castaways participate in a food auction and are then reunited with loved ones. For immunity, the players must dig under and crawl through obstacles to reach a series of revolving math symbols that will help them solve an equation. At tribal council, one person is voted out of the game.
The seven remaining castaways answer questions about each other to win a reward that includes a traditional Brazilian feast with a local family and a swim in a natural spring. For immunity, the players use grappling hooks to retrieve bags. Two people scramble to stay in the game after their alliance begins falling apart, leading to fireworks with another down-and-out tribe member.
The eight remaining castaways compete for a feast with local families and to observe a traditional Brazilian dance by collecting large boards to solve a puzzle. For immunity, the contestants play a version of shuffleboard. One person frantically tries to stay in the game after being targeted by almost everyone.
The nine players are divided into three teams to compete for a feast and a river-rafting trip. The trios must smash opponent's tiles to win. For immunity, the castaways maneuver an obstacle course while linked to a rope. At camp, one person's honesty comes into question due to tall tales.
The Jalapao and Timbira tribes merge and enjoy a feast together. Later, immunity is up for grabs to the person who can cling to a wooden pole for the longest time. One castaway's health becomes a concern, and a doctor is brought in to evaluate the situation.
The 11 remaining castaways compete for a barbecue and a trip to a waterfall by tossing ceramic pigs through a barricade. For immunity, the players use slingshots to break tiles that release bags of puzzle pieces. The first tribe to solve the puzzle wins. At tribal, another person is voted out of the game.
One castaway loses a tooth during the immunity challenge, in which the teams must catch launched balls in a net. For a food reward, the tribe members spin on a platform and then walk on a balance beam. Elsewhere, the secret four-person Exile Island alliance risks being discovered. At tribal, another person is voted out of the game.
A brutal endurance challenge tests the strength of some players, who are required to balance increasing amounts of weight placed on a pole that lies across their shoulders. The winning tribe gets to steal two items from the other team's camp. For immunity, a word puzzle must be solved. Also: A new four-way alliance crosses tribal lines.
Blindfolded castaways maneuver an obstacle course to retrieve buckets of water and corn in an attempt to win luxury items, including pillows and blankets. For immunity, the teams stack six heavy crates to solve a puzzle and form a stairway, which they must climb to the top. At tribal council, another person is voted out of the game.
The tribes compete in a water-soaked version of basketball for immunity and fishing supplies. Also: Taj reveals that she's the wife of an ex-NFL star and it makes her a target; the players learn about a twist to Exile Island that could change the game.
The 18th edition of the reality series begins with 16 castaways being stranded in the harsh interior of Brazil and already divided into two tribes. Before speaking a word to each other, the teams are each forced to eliminate one player from their tribe who will not go on with them to their camp.