Year zero
Year zero does not exist in the anno Domini system usually used to number years in the Gregorian calendar and in its predecessor, the Julian calendar. In this system, the year is followed by . However, there is a year zero in astronomical year numbering (where it coincides with the Julian year ) and in ISO 8601:2004 (where it coincides with the Gregorian year ) as well as in all Buddhist and Hindu calendars.
Year Zero (video game)
Year Zero is an alternate reality game (ARG) by American studio 42 Entertainment based on the Nine Inch Nails concept album of the same name, its expected follow-up, and a possible accompanying film or television project. Although the album was released on April 16, 2007 in Europe, and the following day worldwide, the game had been underway since roughly February 12, 2007 and was expected to continue for approximately eighteen months. The game was created by 42 Entertainment, the same group responsible for the "Halo 2" promotional alternative reality game "I Love Bees". Trent Reznor, frontman and sole member of the band, has called the game "a new entertainment form". In response to criticism regarding the promotion of the album, Reznor stated: