Surv!vor: Cambodia

 is the thirty-first season of the ! Survivor series.

Similar to Borneo, Heroes vs. Villains and Redemption Island this season features a full cast of returning players and serves as a parallel to Surv!vor: Kaoh Rong as part of the thirtieth season celebrations.

Contestants
When the game started, all of the contestants participated in an individual Reward Challenge. The top eight finishers were sent to Invulnerability Beach, where they were safe for two rounds, but tribeless. The remaining 32 castaways were then separated into tribes based on their Edgic ratings from their previous Surv!vor appearances. Moringo won the first !mmunity Challenge and were able to pick the tribe they would compete with on their season; they selected Chung Pow and Kaoh Rong, leaving Ottoba and Utraya to duke it out on Cambodia.

 The castaway spent the first two rounds of the game on Invulnerability Beach and either chose or was assigned to a tribe on Day 7.  The castaway was not chosen in the tribe switch on Day 13, swapping them over to Surv!vor: Kaoh Rong.  The castaway was not chosen in the tribe switch on Day 13 on Surv!vor: Kaoh Rong, swapping them over to this season.  The castaway received the second-most votes at a particular Tr!bal Council at Surv!vor: Kaoh Rong, swapping them over to this season.  The castaway returned from Redempt!on Island.

Season Summary
The eight winners of Reward were sent to "'Invulnerability Beach" and were safe for the first two rounds of the game. In the Reward Challenge in Episode 3, Brandon earned safety from the next Tr!bal Council he attended. As the highest finisher of the losing tribe in the !mmunity Challenge, Ozzy earned safety from that night's Tr!bal Council. As part of her camp selection as tribe captain, Angie earned safety from the next Tr!bal Council she attended. There was no !mmunity Challenge. Amber won the !mmunity Necklace at the Surv!vor Auction, earning herself safety. Tom and Colby won the !mmunity Challenge, and chose for Colby to visit Kaoh Rong's Tr!bal Council in lieu of not attending Cambodia's.

Voting History
No vote: Jerry was evacuated from the game due to inactivity. Christina, Kat, and Susie were not chosen in the tribe switch, and were swapped over to Surv!vor: Kaoh Rong. At this Tr!bal Council, the person who received the most votes was voted out, while the person who received the second-most votes was sent to Surv!vor: Kaoh Rong. Ken played a hidden !mmunity idol, therefore four votes against him were not counted. Ken and Angie played hidden !mmunity idols, therefore five and three votes against them were not counted, respectively. Marisa won a vote nullifer at the Surv!vor Auction, therefore one vote against her was not counted. Katie C. played a hidden !mmunity idol, therefore one vote against her was not counted. In exchange for the !mmunity Necklace, Colby was not able to vote in his season's Tr!bal Council. The first and second Tr!bal Council votes resulted in a tie. As there were only four castaways remaining, the two tied castaways competed in a fire making challenge to resolve the tie. Erin lost to Katie C. in the fire making tiebreaker challenge.