Nuclear Weapon



A nuclear weapon is an explosive device that derives its destructive force from nuclear reactions, either fission or a combination of fission and fusion.

Background
Nuclear weapons were first used in 1945 to destroy the Japanese cities of Hiroshima and Nagasaki, ending World War II. Megaton-class thermonuclear weapons had largely been retired by the major nuclear powers in favor of much smaller-yield warheads by the time of the Great War. An average strategic warhead in 2077 had a yield of about 200-750 kilotons, but with a massive increase in radioactive fallout in place of thermal shock. However, despite the apparent reduction in raw explosive power, this arsenal was far more dangerous to the Earth's ecosystem, as it deposited far greater amounts of fallout in the atmosphere than had been assumed by pre-War models.

Characteristics
Both reactions release vast quantities of energy from relatively small amounts of matter. A modern thermonuclear weapon weighing little more than a thousand kilograms can produce an explosion comparable to the detonation of more than a million tons of conventional high explosives. Nuclear weapons can include bombs, intercontinental ballistic missiles and submarine-launched ballistic missiles.

Fallout
In Fallout, the Glow is a radioactive region destroyed by a direct nuclear hit. The Vault Dweller discovers an unused nuke sitting in the Master's vault, to be used as last resort against this final challenge.

Fallout 2
In Fallout 2, a nuclear bomb is located on Control Station ENCLAVE. It can be used to destroy the main enemy of the game, detonated by an explosion of the on-board nuclear reactor.

Fallout 3
In the Capital Wasteland, nuclear weapons appear in several places. Megaton is built around an undetonated atomic bomb, and the Fat Man and its unique variant, the experimental MIRV, use mini nukes. Liberty Prime has an arsenal of medium-sized bombs. Within Fort Constantine, the Lone Wanderer can attempt to launch a ballistic missile from a concrete silo via a computer terminal to an unmarked destination.

Fallout: New Vegas
The Boomers have a stockpile of atomic weapons at Nellis Air Force Base, some of which they have detonated in the past, though Pete shares that they haven't done this since before he was born. The Fat Man can be purchased from Knight Torres, a merchant in the Hidden Valley Bunker. The Gun Runners also sell them. A unique version can also be purchased if one has the Gun Runners' Arsenal add-on.

In the add-on Lonesome Road nuclear weapons were detonated before the arrival of the Courier and many nuclear weapons remain scattered throughout the Divide, including the Minuteman XI variant within Ulysses' missile silo. The warheads throughout the Divide can be detonated using a laser detonator. With the Wild Wasteland trait, an undetonated atomic bomb labeled The One is located northwest of the Devil's Throat.

Fallout 4
Nuclear bombs designated Mark 28 are used by Liberty Prime against the Institute. Fat Man launchers are found throughout the region. The Glowing Sea is a unique landscape caused by the detonation of a high-yield nuclear bomb southwest of the greater Boston area. The area contributes to a weather phenomenon known as radstorms. One warhead remains inside of the Yangtze submarine, having failed to launch during the Great War. At Nuka-World, a modified Nuka-nuke launcher was designed to launch weaponized miniature Nuka-Cola nuclear bombs, known as Nuka-nukes.

Fallout Tactics
In Fallout Tactics, a nuclear ICBM warhead called Plutonius appears first in Kansas City, worshiped by a ghoul cult. It is later used to gain entrance to the Cheyenne Mountain installation and Vault 0.

Fallout: Brotherhood of Steel
A nuclear device rests in the Secret Vault in Fallout: Brotherhood of Steel, as an emergency decontamination procedure (a self-destruct system) if the vault started to become too dangerous. A special monorail located in the first complex of the laboratories section allows for a quick evacuation of the vault dwellers to a secret exit in the mountains. The Initiate activates it to obliterate all the research and experimental deathclaws, radbugs, super mutants, robots, and the heavily mutated Attis, destroying both the Secret Vault and the city of Los.

Appearances
Nuclear weapons either appear or are mentioned in all Fallout games.

Behind the scenes

 * A space station with an orbital ballistic missile launch platform was planned for inclusion in Van Buren.
 * According to the Fallout Bible, a nuclear weapon was used by terrorists to destroy the city of Tel Aviv in December 2053, with a limited nuclear exchange taking place in the Middle East in January 2054.