Mutator

//ˈmjuteɪtɚ// noun

Definitions

Noun
  1. 1
    That which causes mutation or change.

    "In object-oriented programming, the mutator function changes the value of the field that gives its name."

  2. 2
    A setting which alters specific gameplay mechanics, such as rules, physics, or abilities.

    "Rocket League will gain match-modifying mutators […] The football-meets-cars mashup will let you toggle on gameplay-changing settings such as low gravity, time warping and explosions."

Etymology

From mutate + -or. The video gaming sense likely originated in the video game Unreal Tournament (1999).

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