FFIV happy face

Screenshot of a Smiley Face on the Red Moon from Final Fantasy IV. Located south of the Lair of the Father in an otherwise out-of-the-way spot on the moon, the face consists of a mountain for a nose, two craters for eyes, and assorted smaller craters and mountains to form eyebrows, a mouth, and spots under the eyes.

Though an easy-to-miss easter egg, the face has been retained in all releases of Final Fantasy IV save the DS and iOS releases, and is also found in the same spot in Final Fantasy IV: The After Years.