Decay

Decay is a 2012 British independent horror film written and directed by Luke Thompson, set at the Large Hadron Collider in Switzerland. The movie was created on a budget of $3,225 and was filmed over a period of two years by Thompson and his fellow physicists. The film was released online for free under the Creative Commons CC BY-NC license, shareable and remixable. Decay was premiered on 29 November 2012 and centres on the idea of the Large Hadron Collider transforming scientists into zombies.

Synopsis from Wikipedia, CC BY-SA 4.0. Everything below written here.

Poster © the film's rights holders.