Valve's First Game Was This First-Person Shooter

This page is the CodyCross answer for the clue below from Cats, Group 1728, Puzzle 1 (Hunting Instincts).

Question is: Valve's First Game Was This First-Person Shooter

and the answer is: HALF-LIFE

Word Meaning:

HALF-LIFE — (nuclear physics) The time required for half the nuclei in a sample of an isotope to undergo radioactive decay.

Definitions from Wiktionary.

← Cats Puzzle 1 Group 1728 Answers

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