expression
time is up; time's up
Wasei-eigo from English 'time up', used to announce the end of a timed period, especially in games, quizzes, or competitions.
wasei-eigo (Japanese-coined English), from time up
タイムアップです。試合終了です。
Time is up. The match is over.
クイズ番組で「タイムアップ!」と言われた。
On the quiz show, they said, 'Time's up!'