Chick-fil-A is more than just a clever name for the fried chicken chain, it's rooted in the company's core beliefs that come from the top down.

Chick-fil-A's Code Moo digital promotion stands as part of a broader trend among U.S. fast food chains looking to gamify their brands for consumers.

A number of Chick-fil-A menu items have been discontinued over the years. Here are some of the most popular you can no longer order.