The Challenge: War of the Worlds

War of the Worlds is the second season of The Challenge's spinoff series. This season features various reality alumni from the United States and the United Kingdom competing against each other for a share of $50,000. It is the sequel to last season's Double Agents. The season was filmed in Chiang Mai, Thailand from April to TBD 2021.

Format
Each team will compete in numerous challenges followed by elimination rounds known as "The Proving Ground", which will alternate between gender. The winning team will nominate a speaker, and the speaker will choose one guy and one girl to form the Tribunal (no player can participate in two consecutive Tribunals). The losing team will deliberate in front of the Tribunal and vote in one player of the designated gender. The Tribunal will then discuss with the selected player on possible opponents from either team. In the Proving Ground, the Tribunal will vote in one player of the designated gender to compete against the selected player. The winner stays in the game, while the loser is eliminated. The winner will be granted the choice to switch teams.

Final Prize:
 * Winners: $50,000

Twists

 * Tribunal: The Tribunal will be three players selected from the Winning Team. They are the only players who have safety and power. No player can participate in two consecutive Tribunals.
 * Turncoat: The winners of the elimination have the choice to switch teams.
 * Purge Challenge: A Purge took place during the "Puzzling Swim" challenge where the slowest pair was eliminated from the game.

Elimination chart
Notes
 * Tribunal members in bold indicate that they were the speaker for their team.
 * In Episode 2, Ashley decided to Turncoat after winning the "Firestarter" elimination.

Proving Ground progress

 * Competition
 * The contestant's team won the Final Challenge.
 * The contestant's team lost the Final Challenge.
 * The contestant was eliminated at the Final Challenge.
 * The contestant's team won the challenge and was in the Tribunal.
 * The contestant was not selected for the Proving Ground.
 * The contestant did not compete in the challenge and was not selected for the Proving Ground.
 * The contestant won in the Proving Ground.
 * The contestant lost in the Proving Ground.
 * The contestant withdrew from the competition.
 * The contestant was disqualified from the game.
 * The contestant was eliminated at the challenge.