For the German, Spanish, French, Russian, Italian and Portuguese versions of the movie, every TV/phone/computer screen was recreated in its respective language, as well as every typing sequence, keystroke by keystroke.
The film took just 13 days to shoot. However, it took two years to make due to the prep, editing and animating.
While the film features computer operating systems, programs and (mostly) websites, they were re-created from scratch and animated on computers.
Since they had a seven-week head start on shooting, director Aneesh Chaganty and producer Sev Ohanian hired the editors and together they made a rough version of the film, with Chagnaty playing all of the characters, that lasted for an hour and 40 minutes. They showed this version of the film to the crew before shooting began, in order to give everyone a feel for what they were making.
Throughout the movie various news articles hint that an alien invasion is happening at the same time.