Survival

[1] For example, Charles Darwin's theory of natural selection incorporates the concept of the survival of the fittest in the struggle for existence.

[5] In the United States, a designated survivor is a named individual in the presidential line of succession, chosen to stay at an undisclosed secure location, away from events such as State of the Union addresses and presidential inaugurations, to prevent a hypothetical decapitation of the government and to safeguard continuity in the office of the president in the event the president along with the vice president and multiple other officials in the presidential line of succession die in a mass-casualty incident.

[7] With respect to the human consciousness, particularly when discussed in connection with the concept of a soul or spirit, survival can refer to life after death: In much of the literature on life after death, the term survival is employed more or less interchangeably with the term immortality.

[8]Survival analysis is a branch of statistics for analyzing the expected duration of time until one or more survival-ending events happen, such as death in biological organisms and failure in mechanical systems.

[13] In a 1988 book, Thomas Sobchack compared the survival film to romance: "They both emphasize the heroic triumph over obstacles which threaten social order and the reaffirmation of predominant social values such as fair play and respect for merit and cooperation".

Sobchack explained, "Most of the time in a survival film is spent depicting the process whereby the group, cut off from the securities and certainties of the ordinary support networks of civilized life, forms itself into a functioning, effective unit".

While women have historically been stereotyped in such films, they "often play a decisive role in the success or failure of the group".

Players generally begin with minimal equipment and are required to survive as long as possible by crafting tools, weapons, shelters, and collecting resources.

[19] Survival mode has been compared to the gameplay of classic arcade games, where players face off against increasingly stronger waves of enemies.