Pi Absorption is a program that helps you memorize Pi,
e and the golden ratio to an inconceivable number of digits. It will give you a score when you mess up and reset. You can skip a number of digits and start typing from (e.g.) 100 digits if you know you have the first 100 digits down.

^^^ New version! ^^^ The red screen is appears when you fail. It has the answer on the top lines and what the user typed on the bottom lines.
Old version:
Typing in pi...
This is when you fail.
Score window. Notice that the first 100 digits were skipped. You can
skip digits by clicking on the "..." button while the window is still green.
When the windows is red (ie, after you lost), the "..." button will start the
game over.
Absorb pi before you are put to the test by clicking on the black background. Don't read them like columns! Read across (first 20
decimals are 14159265358979323846).