One chart per film
Each film is placed in a single chart, the most particular one that fits it.
Twenty places
A chart holds the twenty most widely rated films of its kind after screening.
Order of score
Within a chart the films are counted from 1 to 20 by TMDB audience score; when two scores are equal, the film with more ratings goes first.
On the page
The home page shows places 1 to 5 of every chart with an orange number.