It is a funny game, with a simple aim :
A random number is chosen to become your aim.
You choose when your timer (initialised at 0) starts and you have to stop it when it reached the aim beforehand chosen.
Be careful to not stop before or after !

This game is fully configurable, for exemple the color of "Timer", the limit of the random number defining your aim, the difficulty and even the direction of the game.
Because if you invert the game, you will start at a fixed number (by default 300) and you will come down until the aim.
And many other options !

Vibrator and sound are at the meeting.