While Alien, Predator, and Terminator are without a doubt sci-fi films, they have structures akin to slasher movies.

Fede Alvarez’s Dream Alien vs. Predator Movie Could Never Happen The Alien: Romulus director has a cool idea to bring back the crossover franchise, but it would probably be impossible to pull off.

An alien faces a predator in Alien vs. Predator (2004). In addition to building up the anticipation in the vein of those classic movies, Anderson also wanted to follow in their practical footsteps.

With both Alien and Predator back in action, here's what we can learn from their first big-screen crossover two decades ago.

'Alien: Earth' creator Noah Hawley and 'Predator: Badlands' director Dan Trachtenberg both address the crossover at San Diego Comic-Con.

Both the Alien and Predator franchises have seen success in recent years, making the time right for another attempt at a crossover.

Yet Alien vs. Predator has warranted no 20th-anniversary rereleases, despite the fact that this momentous occasion nearly coincides with the release of Alien: Romulus, which comes 20 years and ...

It's likely there will be another cinematic showdown between Aliens and Predators -- but approached from a different perspective.

Alien: Romulus helmer, Fede Álvarez, is game to work on an Alien vs. Predator film in the future — but only if it stays a secret. Find out more here.