The Encyclopedia Of Science Fiction:

The first sf/horror film to be directed by Corman (although in 1954 he had produced Monster From The Ocean Floor), this was, like most of his 1950 films, shot fast (less than a week) on an amazingly small budget (c$40,000). The film tells of a small group of atomic-war survivors menaced by a mutant (created by the radiation) with a bulbous head, three eyes and a taste for human flesh. Corman later improved as a director.

From IMDB:

In The Year 2889 is an almost line-line-line remake of this film, after AIP gave director Larry Buchanan the script for Day the World Ended