Between April and July, MTV aired The Challenge: Total Madness, which was filmed in the Czech Republic and in Austria. The season featured quite a few The Real World and Big Brother stars. In the end, Johnny "Bananas" Devenanzio (The Real World: Key West) and Jenny West (Survival of the Fittest) ended up winning the show. In 2014, MTV introduced the Free Agents format for season 25. Some fans had been asking the show to bring back this format for many years, and it seems like MTV has finally listened. It is now official: the season of The Challenge will be basically Free Agents 2.0.

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According to an The Challenge season 36 is called Double Agents and it will premiere on December 9, 2020. The Double Agents contestants who will compete for the show's $1 million grand prize include rookies Amber Borzotra (Big Brother), Amber Martinez (Are You The One?), Gabby Allen (Love Island and Celebrity Big Brother), Joseph Allen (America's Got Talent), Lio Rush (WWE wrestler), Lolo Jones (Celebrity Big Brother), Mechie Harris (Ex On The Beach), Nam Vo (Ultimate Beastmaster), Natalie Anderson (Survivor and The Amazing Race), and Liv Jawando (Shipwrecked). Among the veterans, Double Agents features four former The Challenge winners: Darrell Taylor (four-time champion), CT Tamburello (three-time champion), Ashley Mitchell (two-time champion), and Wes Bergmann (two-time champion).

Other  veterans who will be featured on Double Agents include Aneesa Ferreira, Big T, Cory Wharton, Devin Walker, Fessy Shafaat, Jay Starrett, Josh Martinez, Kam Williams, Kaycee Clark, Kyle Christie, Leroy Garrett, Nany Gonzalez, Nelson Thomas, Nicole Zanatta, Theresa Gonzalez, and Tori Deal. The MTV press release also revealed that this season was filmed in Iceland and has an "espionage thriller" theme.