The 69 worst science fiction movies of all time, according to critics

At its worst, the science fiction genre can produce enjoyably bad or terribly unwatchable cinema.

The Metacritic data we compiled here to track the most critically panned sci-fi movies of all time finds contemporary eyesores like Netflix's Will Smith-led "Bright" alongside older films like 1978's "Attack of the Killer Tomatoes!"

The apocalyptic allegory "Left Behind" makes two appearances on this list, once for its 2001 original and, lower down the list, for a 2014 remake starring Nicholas Cage.

The list consists of the lowest-rated movies on Metacritic's site that feature a "sci-fi" tag.

Here are the 69 worst science fiction movies of all time, according to critics: