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: ...

Movies that center on the battles fought by members of the military certainly have their place, but sometimes it's more fun to see what (albeit, fictional) soldiers might do against an alien combatant ...

It's a big universe out there, and while we're all for exploring it, a specific subgenre of science fiction movies has hinted that it might be a bad idea. Alien invasion movies have come in droves ...