The title Saturday the 14th already gives one good overview what to expect here: a horror parody where the title is the most witty aspect of it. And the title isn’t very witty.
On paper it all sounds pretty good: a clean cut nuclear family inherit a cursed house, after which their son accidentally unleashes a horde of monsters by opening a forbidden book. But before you get excited, there’s really not much to be loved here as the movie isn’t anywhere near the best monster adventure comedies of the era. Despite its name, the movie does not poke fun of the Friday the 13th series at all. In fact, it doesn’t seem to parodize any horror movie that I know of.
But that all is really beside the point since no matter what the movie aims for, it ends up a failure that won’t provide the scares nor the laughs. Also, the piss poor production quality crushes any hopes for at least getting to witness any cool movie monsters on screen.