In the theology of the Catholic Church, Limbo (Latin , edge or boundary, referring to the "edge" of Hell) is a speculative idea about the afterlife condition of those who die in original sin without being assigned to the Hell of the Damned. Medieval theologians of western Europe described the underworld ("hell", "hades", "infernum") as divided into four distinct parts: Hell of the Damned, Purgatory, Limbo of the Fathers or Patriarchs, and Limbo of the Infants. However, Limbo of the Infants is not an official doctrine of the Catholic Church.

Limbo (stylized as LIMBO) is a puzzle-platform video game, the first title by independent Danish game developer Playdead. The game was released in July 2010 as a platform exclusive title on Xbox Live Arcade, and was later re-released as part of a retail game pack along with Trials HD and 'Splosion Man in April 2011. Ports of the game to the PlayStation 3 and Microsoft Windows were created by Playdead, released after the year-long Xbox 360 exclusivity period was completed. An OS X version was released in December 2011, while an emulated Linux port was available in May 2012 (followed by a native port in June 2014). Ports for PlayStation Vita and iOS were released in June and July 2013, respectively. An Xbox One port was given away for free on November 23, 2014 to the majority of customers who purchased an Xbox One on its original launch day, and a PlayStation 4 version was released on February 24, 2015.