"Don't worry Parker, you'll get whatever's coming to you" ~ Lt Ripley.
The xenomorph from Alien (1979) isn't a guy with a knife/machette/power tool chasing scantily clad teens, but it is a single killer taking out a small number of victims in a very remote, confided space. So, given that it vaguely fits the genre, does it follow the rules?
As the name suggests, Friday the 13th Part 2 is a sequel to the original Friday the 13th. But does that make the 1981 film more or less likely to follow the slasher film rules?
1984 saw the release of Silent Night, Deadly Night, not the first Christmas based horror but certainly the most controversial (because, you know, small children who still believe in Santa may be upset to see someone dress as Santa if they're allowed to watch a horror film. It is not a film about a small group being killed off one-by-one but rather a random killer film. So does that mean it follows the rules or not?
In 1980 the first of the most successful horror movie franchise was released: Friday the 13th. While the highest grossing horror series in the US, it is also the most disliked by critics. Are both of these things because the series follows or breaks the Slasher Rules?
There list of rules that you regularly see online: Horror Film Rules or Slasher Film Rules. They are rules about films in which a small group are killed off one-by-one and who (if anyone) will survive. The apply to most Slasher films and a number of other non-Slasher Horror films (especially animal and alien attack films) and even Action and Disaster films. I've chosen to call them Slasher film rules, but will look at other Horror and non-Horror films from time to time.
These are not intended as survival guide but rather as genre rules to explore. If you're really just trying to survive a real-life slasher film situation, the following this footage will help you survive (ignore the spelling of "sequel"):