A random number is displayed for a short period of time, and you must then try and accurately recall that number.

There are three different types of game play:

Normal: You must enter the number exactly as it appeared on screen.

Ordered: You must enter the number in numerical order - makes you think a little harder.

Reverse: You must enter the number in the reverse order to which it appeared.

In addition you can set the length of the number displayed, the length of time the number is displayed for, and the delay after the number disappears before you can enter your response.

The game is very small (25K), written expressly to be playable on my older iPaq 3150 with a monochrome screen and only 16 meg RAM.

I have only been able to test it on my iPaq, so please, if you own another PDA, try the demo version first.