pxt-calliope/olddocs/lessons/game-of-chance.md

# game of chance blocks lesson

create an answering machine on the BBC micro:bit

## Topic

Game Library

## Quick Links

* [activity](/lessons/game-of-chance/activity)
* [challenges](/lessons/game-of-chance/challenges)

## Prior learning / place of lesson in scheme of work

Learn how to creating a message with a **game over** to write your message. We will be learning how to create a message using show string and on button pressed.

## Documentation


```cards
game.gameOver()
basic.showString("Hello!")
input.onButtonPressed(Button.A, () => {})
```

## Objectives

* learn how to use the game library
* learn how to show a string on the LED screen one character at a time
* learn how to use to register an event handler that will execute whenever an input button is pressed