One of the most impactful sci-fi crossover franchises is surging on streaming, indicating it might be time for another entry.

Most of the Alien films, including the 1979 original directed by Ridley Scott, will be available to stream on HBO Max starting April 1.

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: ...