Don’t expect a straightforward timeline, because continuity is a mess with the Alien and Predator timelines (even if, as in this list, you choose to ignore tie-in comics, novels, and games). Predator: ...

Aliens are a tried and true staple of sci-fi, an element that invites fear and horror, but which can open itself to wonder, discovery, and statements on the human condition just as readily. Alien ...