The series is for the new mobile-focused streaming service, Quibi -- short for quick bites.
Spielberg asked engineers to make his show only available to view after midnight. The working title is "Spielberg After Dark."
Quibi founder Jeffrey Katzenberg, a former Disney studio chief, said Spielberg has written five or six short episodes called "chapters." He called the show "creepy" and "super-scary."
Both men co-founded Dreamworks pictures along with David Geffen.
Quibi is set to launch in April 2020.