Koh-Lanta: L'Île au Trésor

Koh-Lanta: L'Île au Trésor is the 19th season of Koh-Lanta, the French version of Survivor.

Twists

 * Treasure Island: This is an island away from the two tribe camps. On this island is hidden a "golden ring", which directly qualifies its founder to the final four. To find this ring, the castaways must go through a ten-step hunt. In the first episode, a challenge is held right after the marooning and the winner is the first person to spend 24 hours on the island. During the pre-merge phase of the game, after each Reward Challenge, the person who previously went to the island must send a castaway from the winning tribe (including themselves if they are on this tribe) to the island. After the merge, the winner of each Reward Challenge is given the choice between enjoying the reward or going to the island. If they choose the island, they must give the reward to someone else, and if they choose the reward, they must send someone to the island. This continues until the ring is found.
 * Immunity Necklaces: The Immunity Necklaces (equivalent of Hidden Immunity Idols in Koh-Lanta) are hidden at pre-merge challenge sites, while clues are hidden at the two camps.