Save for the Predator franchise's Yautja and Alien's Xenomorphs, these are the coolest extraterrestrials to ever grace cinema history.

While a direct Alien: Covenant sequel might never happen, a franchise writer has revealed what happened to Michael Fassbender ...

Add these book adaptations to your watch-list for the year, with one already available to stream!

While some “unfilmable” novels have been successfully adapted, the books on this list might be too difficult to even attempt.