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The Vault - Fallout Wiki
The Vault - Fallout Wiki
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Two yellow generator force field in Fallout 2

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Repulsion devices are technological security devices used to prevent a person entering specific areas, confine captives to a particular zone or make a person unable to perform a specific action. There are several types of repulsion devices like laser tripwires and pulse fields, but the most used (and not to mention most famous) is the force field.

Force fields

Force fields are photonic resonance barriers emitted by a device that creates a wall of energy. They have many applications and varying degrees of strength and can either completely block a passage or injure a person passing through. However, most force fields are non-lethal. Generally, solid objects cannot pass through it.

Generator force field

The most common pre-War and post-War force fields. They are powered by a separate power source and can usually be disabled with an accessible mean.

Yellow force field


The principal force fields used in Core Region. It has a yellow color and is powered by an emitter positioned to the left. It is impossible to pass through a it without disabling it first. Yellow force fields may be temporarily disabled by tinkering with the force field emitter.

Red force field


This force field is similar to the yellow field, but bears the important distinction of being permeable - a person can pass through it, but will sustain a small amount of damage. Judging by the identical emitter generating the field, it's possible that it's the same type of force field as the yellow variety, just damaged.

Blue force field


An advanced force field referred to by Liberty Prime as a "photonic resonance barrier", mostly used by the Enclave after 2241. It has a blue color and it's powered by two large transportable generators, one on either side of the path. These generate the blue force field between the two pylon generators and have an increased width and the size than a standard force field. It is possible to create a large barrier by combining several blue force fields between them. Generators cannot be destroyed and it is impossible to pass through them.

Forcefields used to protect sections of Raven Rock and the mobile base crawler can be bypassed using nearby terminals,[1] although doing so requires a high Science skill (80). They can also be damaged with the explosives skill (50), allowing access but at the cost of slight health damage when passing thought the field. Smashing the panel has a similar effect.

Door force fields

A rare force field and one of the two type used by aliens. They are powered by several beams embedded in the margins of an entry and they cannot be moved.

Yellow force field


A force field only used in Vault City and Control station Enclave, possibly a refinement of the force field used elsewhere in the Core Region. It has a yellow color and it's used in captive areas as a door. It is impossible to pass through it without disabling it first. They can be disabled by using nearby terminals.

Blue field


A force field only used in the Sierra Madre vault. It has a blue color and it used in the entrance area front in the entry of the Sierra Madre vault as a door. It is impossible to pass through it without disabling it first. They can be disabled by remote hacking.

White force field


The principal force field of aliens. It has a white color and it used in captive areas as a door. It is impossible to pass through it without disabling it first. They can be disabled by using nearby terminals or buttons.

Big MT force field

Big MT have developed several versions of force field based on the blue photonic resonance force field. However, they were created in a different frequency than other and a specially adapted sonic emitter can easily disable them.

Container force field

A container equipped with a blue force field.

Force field generator


A deployable force field used by aliens that protects against ballistic and energy weapon fire, and which also inhibit the movement of people. It can be deactivated by destroying the projection unit behind the force field.

Electrical security systems

The various electrical security systems found within high security and technologically advanced locations. For example; electric floors and doors.[2]

Laser tripwire

Laser tripwires are found in technologically advanced areas like the Securitron vault and Big MT's X-13 research facility. A blue laser is projected from an emmitor and captured by a receptor directly across from it. When the beam is interrupted (by say, a leg) an alarm is triggered and security measures are alerted.

Pulse field

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An electromagnetic pulse grid used by the Chinese to protect their base of operations in the Anchorage Reclamation simulation. It paralyzes the circuits of every electronic device crossing it, including power armor, causing irreversible damage and the wearer suffers a massive electrocution, collapses and die through powerful electromagnetic pulses (powerful EMP has minimal effects on biological systems but the wearer here is linked to his power armor). It can be disabled by a controlled computer terminal near it.

Pacification field

A unique field used in Big MT at The Think Tank dome.

Radar fence

A unique field implanted around Big MT in the crater.

Energy field

A unique field implanted in the Secret Vault.



Fallout 2

Fallout 3

Fallout: New Vegas

Fallout Tactics

Fallout: Brotherhood of Steel


  • Force field in Fallout 3 can mostly be disabled using nearby terminals with 75 or 100 Science.