TWO UP
A game of chance. The programs throws (virtually) two coins.
Have the player choose to gamble on:
- heads (obverse)
- tails (reverse)
- head + tail (Ewan)
If they guess correctly, they win. If not, they lose. Make sure the coin tosses are actually random.
Example
Program : Please place your bet (HH, HT, or TT): Player : HH Program : HT You lose! Player : TT Program : TT You win!
You could have the player play multiple rounds and keep track of a score.