Heres a TV spot to celebrate the occasion, and remind you of the films brilliance.

There, they encounter an unstoppable alien creature that proceeds to pick off the crew one by one.

Spoiler, there are now six direct sequels so yes.

Take a seat and enjoy the original Alien back in theaters.

Take a seat and enjoy the original Alien back in theaters.Image: Fox

This original Alien also acts as a table-setter for Alien: Romulus, which opens August 16.

Heres a short preview of that.

Are you a big Alien fan?

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Will you be heading out to see the film on Alien Day?

Let us know below.

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