What’s in the Box arrives on December 17, 2025, introducing a new competition format built around mystery, trivia, and shifting alliances.
Netflix has released the official trailer, key art, and full contestant lineup, giving viewers their first look at a game show that centers on high-stakes rounds and unpredictable matchups.
Hosted by Neil Patrick Harris, the six-episode series pairs contestants in ongoing battles where correct guesses lead to major prizes and, at times, complications that shape the outcome of the game.
Watch the Trailer
How What’s in the Box Works
At its core, What’s in the Box Netflix relies on a simple but effective structure: giant boxes hide prizes, traps, and surprise reveals. Contestants compete in fast-paced trivia rounds, racing to guess what each box contains.
The series introduces layers beyond traditional quiz formats. Once prizes are won, contestants must find a way to keep them. Over several episodes, alliances shift and twists disrupt early successes, creating a competition that tests knowledge, judgment, and endurance.
The format builds tension from uncertainty about what’s inside the box and what winning a round might mean for the episodes that follow.
Neil Patrick Harris Hosts the Competition
The Team Behind What’s in the Box
Rollercoaster Television, part of ITV Studios, produces the series.
Executive producers include James Fox, Dom Waugh, Wes Kauble, and Leanne Witcoop.
Across six 45-minute episodes, What’s in the Box on Netflix brings together elements from multiple game formats: trivia, deduction, endurance challenges, and partner dynamics, while keeping the focus on the central mystery mechanic that drives each round.
What Viewers Can Expect From the Contestant Reveal
Netflix has confirmed the complete lineup of competitors for What’s in the Box, giving audiences an early look at the players whose decisions shape the game’s structure. The series uses pairs of contestants, allowing strategic partnerships and tension when those alliances are tested.
The Poster
Key Details
- Release date: December 17, 2025.
- Format: 6 episodes, 45 minutes each.
- Host: Neil Patrick Harris.
- Executive Producers: James Fox, Dom Waugh, Wes Kauble, Leanne Witcoop.
- Production Company: Rollercoaster Television (part of ITV Studios).
- Premise: Contestants face trivia rounds and mystery-box challenges involving prizes, twists and shifting alliances.
- Platform: Netflix.
- Source material: Original ITV Studios game show format.
