The youngest player goes first.
On a turn, a player flips over one encrypted card and one other card.
If the encrypted card is revealed, the player must decode it using the Caesar Cipher key shown on the card.
The player writes down the decoded word or phrase.
If the second card matches the decoded cybersecurity concept, the player keeps both cards and earns one point.
If the cards do not match, both cards are turned face down again.
Play continues clockwise until all pairs are found.