Netflix has renewed “Ultimate Beastmaster” for a second season.

The athletic competition show premiered last year as Netflix’s first reality series, part of a larger move into unscripted programming for the streaming giant. Created by “The Biggest Loser” executive producer David Broome, “Ultimate Beastmaster” features athletes from different countries competing to best a vast obstacle course dubbed “The Beast.” Sylvester Stallone executive produces alongside Broome.

The show was designed to be a unique international play for Netflix. Broome’s 25/7 productions created six different versions of each of the first season’s 10 episodes geared toward six different territories — the United States, Brazil, South Korea, Mexico, Germany, and Japan. Each version is edited differently, and each features its own pair of announcers speaking in the country’s native language.

Season two U.S. hosts will be former NFL star Tiki Barber and comedian Chris DiStefano. Teams will compete from Spain, France, Italy, China, India, U.S., Mexico, Brazil and South Korea — with localized versions of the show being produced for each. The new season, which has already been shot, will premiere Dec. 15 on Netflix worldwide.

Netflix has seen mixed results with its nonfiction programming thus far. While 2015 documentary series “Making a Murderer” was an enormous hit and cultural phenomenon for the service, its first swing at a late-night style talk show, Chelsea Handler’s “Chelsea,” failed to capture buzz and was recently brought to an end after two seasons.

Netflix has shown a willingness to invest in reality competitions beyond “Ultimate Beastmaster.” The streaming service is currently developing “Rhythm & Flow,” a music competition show from executive producers John Legend and Jeff Gaspin.

Watch the trailer for “Ultimate Beastmaster” season two below: