Filmed during the COVID-19 pandemic. Tampere, Finland was chosen as the filming location because of the Finnish government's successful effort to curb corona cases.
The core cast are portrayed as American and the cars have unidentifiable license plates with drivers on the left side. But all the supporting cast are European and the city is shown to have European street signs. This is never explained as the film takes place in an unidentified time period in a presumed America that now has more than 27 Amendments to the Constitution.
Jesse Eisenberg was originally cast but dropped out due to scheduling conflicts. Theo James replaced him.