The computer rolls a die and tells you the result. You're supposed the guess the type of die rolled. If you do, you will. If not, the computer rolls again and you get another shot.
At the moment, the possible dice include d4, d6, d8, d10, d12, d20, d30, d00, and dF.
I'm open to implementing more dice, but right now, I wanted to stick to dice I've had in my collection for at least 30 years. (less that really weird d24)