Liminal is a self-contained tabletop roleplaying game about those on the boundary between the modern day United Kingdom and the Hidden World- the world of secret societies of magicians, a police division investigating Fortean crimes, fae courts, werewolf gangs, and haunted places where the walls between worlds are thin. The players portray Liminals - those who stand between the mortal and magical realms, with ties to each. Examples of Liminals include:

* A magician who acts as a warden to protect unaware mortals from supernatural menaces;

* Someone of mysterious birth who is perhaps half Fae. In any case they are caught up in Faerie politics whether they like it or not.

* A burglar who steals supernatural relics.

* A werewolf who still has many ties to ordinary people.

* A dhampir, striving to do good despite their vampiric infection.

* A mortal detective who knows some of the real strangeness out there.