A group of eighty American workers are locked in their office and ordered by an unknown voice to participate in a twisted game.
- Year: 2016
- Country: United States of America
- Genre: Horror, Thriller
- Studio: Orion Pictures, Blumhouse Productions, The Safran Company, BH Tilt, Troll Court Entertainment, Metro-Goldwyn-Mayer, Itaca Films
- Keyword: experiment, office, dark comedy, murder, american, security guard, locked in, elevator, deadly game
- Director: Greg McLean
- Cast: John Gallagher Jr., Tony Goldwyn, Adria Arjona, John C. McGinley, Melonie Diaz, Michael Rooker