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Initially recognized shortly after the "Plague Walker" discovery, the decision was made to delay any significant work on adapting this mutation. Given the difficulties encountered with that other research, this seems to have been the correct choice.


Difficult to develop without massive collateral damage, extra measures were taken to ensure the safety of all scientific monitoring equipment and personnel, and, where possible, the safety of the subject as well.

In hindsight, perhaps the results of the "Plague Walker" experimentation were overcompensated for; early trials of the "Unstable Isotope" serum were so weak that subjects needed to be injured severely enough to risk death in order to provoke a reaction.
The Whitespring bunker terminal entries

Unstable Isotope is a mutation in Fallout 76.

Overview[]

Positive effects
10% chance to release a radiation blast when struck in melee.
Negative effects
The radiation blast irradiates the player character.


Gallery[]

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