Easter Egg

An Easter egg is a surprise or in-joke hidden by the creators in a movie, video game, or other media. Usually this is nothing more than a treat for die-hard fans who go searching for such little gems; frequently they are humorous in nature.

In the Legend of Zelda series, there are very few known Easter eggs. The most well-known one, considered by many to be one of the best in video game history, is the Chris Houlihan room in The Legend of Zelda: A Link to the Past.