In 1980, Atari released Adventure, created by developer Warren Robinett. It sold more than a million copies at $25 each. Robinett's salary was $22,000 a year with no royalties and no credit. Atari refused to put developers' names on games, fearing competitors would poach them. So Robinett hid a secret room in the game containing the words "Created by Warren Robinett" and left before anyone noticed. A 15-year-old named Adam Clayton from Salt Lake City found it and wrote to Atari. Steve Wright, Atari's Director of Software Development, decided to keep the hidden message. He called it an "Easter egg" — and the term entered the language forever.