43AD is a gritty military-style game with a slice of dark horror running through it. Life is grim and the world of the native Britons is painted in dark and horrific colours. Britain is a place of fear and death, terrors and torments, and the Iron-Age tribes live with these horrors.
Characters are Roman soldiers, fighting for the emperor in a hostile land against the battle-hardened warriors of the tribes. This is the visible enemy, but beyond, should the Game Master wish to go there, lay the dark secrets of Britain, the night terrors, the death-bringing spirits of the wild, the night crawlers, the face eaters, the skinchangers and the rest of the monsters and wild things that infest Britain.
All rolls are made on d6, with the exception of a d100 being used in character creation.