The Chrono (クロノ Chrono?) series is a video game franchise developed and published by Squaresoft. It began in 1995 with the time travel console role-playing game Chrono Trigger, which spawned two continuations, Radical Dreamers and Chrono Cross. A promotional anime called Dimensional Adventure Numa Monjar and two ports of Chrono Trigger were also produced. As of March 31, 2003, Chrono Trigger was, with 2.65 million units, Square Enix's 12th best-selling game (based on copies shipped); Chrono Cross was, with 1.5 million units, the 24th. The games have been subject to extremely positive reviews.