pxt-calliope/docs/reference/game/start-countdown.md

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# Start Countdown
Start counting down time from the number of milliseconds you say.
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```sig
game.startCountdown(1000)
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```
### Parameters
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* a [number](/reference/types/number) that means how many milliseconds to count down (one second is 1000 milliseconds)
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### Examples
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This program is a simple game.
Press button ``A`` as much as possible.
At the end of 10 seconds, the program will show your score.
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```blocks
input.onButtonPressed(Button.A, () => {
game.addScore(1)
})
game.startCountdown(10000)
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```
### See Also
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[score](/reference/game/score), [change score by](/reference/game/change-score-by)
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