The Belko Experiment (2016)

The gang gets Gunn with it! They tango with a James Gunn horror film long before he was in charge of the DC UNIVERSE

 

The Belko Experiment is a 2016 American horror film directed by Greg McLean and written by James Gunn, who also produced the film with Peter Safran. It stars John Gallagher Jr., Tony Goldwyn, Adria Arjona, John C. McGinley, Melonie Diaz, Josh Brener, and Michael Rooker. The film follows eighty Americans working abroad for a company named Belko Industries in Bogotá, Colombia. One day after they arrive at work, they are locked inside the building, and a mysterious voice announces that they have to start killing each other or else.