The best alien invasion movies feature the most exhilarating stories about extraterrestrial visitors, from War of the Worlds to Annihilation.

These wildly different films explore the wondrous, and sometimes terrifying possibilities of contacting extra-terrestrial life.

Streaming platforms for Alien Signs: The Message: The Crop Circle Mysteries haven’t been announced yet. Check back soon for updates on where you can watch it online.

Add Yahoo as a preferred source to see more of our stories on Google. When you buy through links on our articles, Future and its syndication partners may earn a commission. Alien Day was this past ...