Game Changer
Noun · Hacker Culture
Definitions
A phrase used to describe something expected to change the competitive or practical landscape significantly. In tech culture it is often overused in marketing, though occasionally the label is deserved.
In plain English: Something expected to change things significantly.
Example: "The memo called the feature a game changer, but the engineers waited to see whether it changed retention, support load, or anything concrete before repeating the phrase."