Twists

• The Reinforcements: Four Reinforcements (Chris "CT" Tamburello, Dee Nguyen, Natalie "Ninja" Duran, and Turabi "Turbo" Çamkıran) arrived following the first challenge. The winning team of the first daily challenge will have first picks on one male and one female to join their team, with the remaining players joining the losing team.
• Double Elimination: Episode 8 featured a Double Elimination Round in which both a male and a female player were eliminated. The losing team had to nominate a male and female player, and the Tribunal also nominate a male and female player.
• Purge: Some challenges are designated as a Purge challenge - sudden death challenges where the losers are immediately eliminated.
  • The "Puzzling Swim" daily challenge was a Purge challenge. The slowest pairing in the swimming portion of the challenge was instantly eliminated.
  • As the final leg of the Final Challenge only allowed for four members on each team, the players competed in a mid-final purge to narrow each team to four players.
• Instant Elimination: Following the "Mine The Cart" challenge, the players participated in instant nominations for an Elimination Round to be held immediately following the challenge.

Challenge games

• Trench Warfare: Teams must race through a hallway, grab their national flag at the opposite end, reach the other side of their sandbag walls and plant the flags. Each player is responsible for two flags, and can only carry one at a time. The first team to plant all 28 flags wins.
  • Winners: Team USA
• Cryptic Crossbow: Challengers swim to collect 16 letters attached to buoys, which will create a four-word puzzle. One team member is then launched from a giant crossbow to swim and retrieve a cryptex puzzle and solve it using their four-word puzzle solutions. The team that opens their cryptex first wins.
  • Winners: Team USA
• Paddlewheel Puzzle: After memorizing four-digit codes, players enter a rotating paddlewheel to collect 16 separate puzzle pieces which can be unlocked by entering one of the codes. Challengers then assemble those puzzle pieces into either an American or British flag. The fastest team to correctly build their puzzle wins the challenge.
  • Winners: Team USA^{[lower-alpha 5]}
• Relic Runner: Played in two heats. Giant, heavy relics must be transferred from the bottom of the hill to the very top by one team, while the other team is situated at the top with giant balls, a slingshot, water cannon, and a human hamster wheel to bomb the team that's running the relics up. Each player is responsible for two relics, and can only carry one at a time, guaranteeing two trips up the hill for everyone. If a player drops their relic, they have to start from the very beginning. Whichever team finishes in the fastest time wins.
  • Winners: Team UK
• Hooked: Each player has to jump to a zip line and ride it to the water, then swim around a buoy and reach a boat. The team with the fastest average time wins.
  • Winners: Team USA
• Explosive Decisions: Both teams select their six smartest players to be asked a series of trivia questions while sitting on an ejection seat that will make them fly in the air if the answer is wrong. The player is awarded a point only if his or her adversary is wrong. The first team to reach a total of six points wins.
  • Winners: Team USA
• Resilient River Run: Each team has to assemble a pyramid, transport it down a river and use it to transfer two relics (carrying one at a time). Whichever team finishes in the fastest time wins.
  • Winners: Team USA
• Crate Expectations: Both teams are given 125 crates which they must use to build towers to climb and retrieve 12 hanging relics. Once all relics have been collected, they must transport all their crates past the finish line. The first team to pass the finish line with all their crates and relics wins.
  • Winners: Team USA
• Under Siege: Played in gender divided heats. Both teams are placed inside of a swinging container and must solve a hexagonal puzzle. The team that completes the puzzle in the fastest time (in whichever heat) wins. In the event of a tie, a sudden death heat is played with some of the pieces already set in place.
  • Winners: Team USA
• Incoming: Played in gender divided heats. Competitors must retrieve a ball from a mud pit and return to their side to advance to the next round, while the number of balls decreases each round. The last player standing wins the heat for his or her team. The first team to win two heats wins.
  • Winners: Team UK
• Temple Wall Traverse: Teams are divided in half and start on opposite sides of a climbing wall above water. Competitors must match as many tiles labelled with Roman numerals to their position on the wall, while members of the opposite team use a series of hand cranks to separate the walls to make them more difficult to climb. The team with the most tiles matched after fifteen minutes wins.
  • Winners: Team USA
• Escape To Freedom: Played in gender divided heats. One at a time, competitors attempt to complete an obstacle course dragged by a boat and ring a bell at the end without falling in the water. At a section of the course, there is a defender from the opposing team attempting to stop them from finishing. The team with the most players to finish the course within the time limit wins.
  • Winners: Team USA
• Puzzling Swim: Teams start on a platform in the water and swim in pairs to retrieve a total of four keys that unlock a riddle and letter tiles. The first team to identify the answer to the riddle wins. Additionally, the slowest swimming pair from either team would be eliminated immediately.
  • Winners: Team USA
  • Eliminated: Joss & Kayleigh
• Mine The Cart: One male and one female from each team are suspended in a cart above the water. They must wheel the cart to collect as many medallions as possible, while a member from the opposing team swims and collect a saw to cut through the ropes connected to their cart. Once the rope is cut, players inside the cart will be tipped out and cannot collect medallions anymore. The team with the most medallions after three rounds wins.
  • Winners: Team UK

Proving Ground games

• Pole Wrestle: Players are placed at the center of a circle and are asked to place both hands on a pole. The first contestant to wrestle the pole out of his opponent's hands two out of three times wins. Originally from The Duel.
  • Played by: Idris vs. Sean
• Firestarter: Players push a cart full of rocks with a lit torch toward their opponent's fuse. Whoever lights their opponent's fuse first wins.
  • Played by: Big T vs. Georgia
• Firing Squad: T.J. Lavin shoots a ball from a cannon, the players then have to wrestle the ball from each other and deposit it into their basket for a point. The first player to get to two points wins.
  • Played by: Bear vs. Wes
• Branched Out: Players must climb a tree by placing 21 branch-like pegs in slots. The first player to correctly place all the pegs and ring the bell at the top wins.
  • Played by: Laurel vs. Ninja
• Die For Me: Players are locked in a cube-shaped cage with a bag of numbered balls. They must then roll the cage down a path with seven landmines with Roman numerals on them, placing the numbered balls corresponding to the landmines. The first player to correctly place all the balls in the landmines and detonate the eight landmine at the end of the pathway wins.
  • Played by: Bananas vs. Theo
• Trapped: Players start at the top of a platform and must slide down a glass tower into a ball pit where a puzzle key is hidden. Players must memorize the puzzle key, shimmy back up the glass tower and put their puzzle together. The first player to complete the puzzle wins.
  • Played by: Jenny vs. Nicole
• Whalloped: Players stand at opposite ends of six walls. When the horn sounds, players run around the walls until they meet in the middle where they have to get through or around their opponent to the other side and ring the bell. The first player to ring the bell first three times wins.
  • Played by: Bear vs. Joss
• Running Riot: Players are given two answer keys and must retrieve 25 relics with their weight corresponding to the numbers. The player who retrieves all 25 relics and places them in the exact order wins.
  • Played by: Esther vs. Georgia, Kyle vs. Theo
• Break Free: Players must use a rope to swing and break through a dry wall to reach a three-dimensional puzzle. The first player to solve their puzzle wins.
  • Played by: Idris vs. Theo
• Blockbuster: Players push blocks to their opponents side of a structure while trying not to fall off. The contestant who pushes the most blocks within the time limit two out of three times wins.
  • Played by: Georgia vs. Tori
• Under the Hammer: Players use sledgehammers to hit 12 nails through concrete and smash the lightbulbs underneath. The first player to break all 12 lightbulbs wins.
  • Played by: Jordan vs. Theo
• Hall Brawl: Players must run through a narrow hallway past another contestant to ring a bell. The player who rings the bell first twice, wins the elimination. Originally from Battle of the Seasons (2012).
  • Played by: Jenny vs. Tori
• End of the Rope: Players begin standing on a small platform and pull on a rope that is buried underground. The first player to retrieve all of the rope or pull their opponent off the platform three times wins.
  • Played by: Jordan vs. Josh
• Run for Your Life: Players are given a box with four puzzle pieces inside. They must carry two puzzle pieces at a time and run up a mountain to a structure where their puzzle station is. After they collect all four pieces, the first person to complete their puzzle wins.
  • Played by: Ashley vs. Nany

Final Challenge

Elimination progress

Competition key

  The contestant's team won the Final Challenge

  The contestant's team lost the Final Challenge

  The contestant was eliminated during the Final Challenge

  The contestant's team won the daily challenge, was in the Tribunal, and was safe from elimination. Bold indicates the speaker of the team.

  The contestant was not chosen to go into the Proving Ground

  The contestant was put into the Proving Ground and won

  The contestant was put into the Proving Ground and was eliminated

  The contestant was eliminated for finishing last in the daily challenge

  The contestant was disqualified from the competition due to disciplinary reasons

  The contestant withdrew from the competition

Reunion special

The two part reunion special aired on December 18, 2019 and was hosted by Justina Valentine and NBA Champion Nick Young. Cast members attended in London, England. The first part received 0.64 million viewers along with a 0.4 18–49 demo rating, while the second part dropped to 0.54 million and a 0.3 demo rating.^[22]