Survival Zone is a 1983 South African post-apocalyptic action-thriller directed by Percival Rubens and starring Gary Lockwood, Camilla Sparv, Morgan Stevens, and Zoli Marki.
They live a reasonably happy life until they are besieged by a brutal and cannibalistic motorcycle gang who want to eat men and reproduce with the women.
Screenplay, direction and production by Percival Rubens with a screenwriting assist by Eric Brown.
[1] Mike Bogue noted in his book Watching the World Die that the actors do their best, but that the night scenes were "murky" and it was hard to make out details.
[3] A reviewer for The Monitor found the film amateurish and questioned if Rubens and his producer intended for it to be "a play upon post-World War III adventure flicks, what with the improbable situations developed.