A holo-mine was an offensive system used by starships of the Romulan Star Empire in the alternate reality created by the temporal displacement of the Narada. They were a powerful explosive device, holographically disguised as a Federation weapons repositories. Holo-mines could be deployed by Centurion-class, Cetratus-class, Gladius-class, Patronus-class and Securis-class starships. (TOS video game: D-A-C)