Battlefield Earth — Alien:

This film is legendary in cinema history—but for all the wrong reasons. Based on a novel by Scientology founder L. Ron Hubbard, it is frequently cited as one of the worst movies ever made .

“"A million monkeys with a million crayons would be hard-pressed in a million years to create anything as cretinous as Battlefield Earth." — Rita Kempley, The Washington Post” Wikipedia 2. Alien: Battlefield Earth (2021)

This is a much smaller, independent film directed by Andrew Jones. It is often described as a "mockbuster" —a low-budget movie designed to capitalize on the names of more famous franchises.