the.com/fatality

Mortal Kombat's way of asking if you've had enough, then not waiting for an answer.

means A death resulting from an accident, disaster, or violent event — the grim tally-mark of a crash report.

from From Latin 'fatalitas,' rooted in 'fatum' meaning 'that which has been spoken' — the decree of the fates. Originally the word carried the broader sense of being 'ordained by fate' or inevitable doom, before narrowing in English to mean a death itself. The video-game finishing move borrows that old sense of fate sealing the verdict, no appeal possible.

origin
term predates games, meant death from accident or disease
pop culture
Mortal Kombat 1992 made it a finishing move
etymology
from Latin fatalis, decreed by fate
game design
requires a button combo after winning, not during
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