At the time, Atari did not include programmers' names in the game credits, both to prevent competitors from poaching its developers, as well as to deny developers a means to bargain with the management of the new owners, Warner Communication. The use of the term ' Easter egg' to describe secret features in video games originates from the 1980 video game Adventure for the Atari 2600 game console, programmed by employee Warren Robinett. The secret room in Adventure with Warren Robinett's credit

The earliest known Easter egg in software in general is one placed in the 'make' command for PDP-6/ PDP-10 computers sometime in October 1967–October 1968, wherein if the user attempts to create a file named 'love' by typing 'make love', the program responds 'not war?' before proceeding. The earliest known video game Easter egg is in Moonlander (1973), in which the player tries to land a spaceship on the moon if the player flies horizontally enough, they encounter a McDonald's restaurant and if they land next to it an astronaut will visit it instead of standing next to the ship. The term used in this manner was coined around 1979 by Steve Wright, the then-Director of Software Development in the Atari Consumer Division, to describe a hidden message in the Atari video game Adventure, in reference to an Easter egg hunt. Īn Easter egg is a message, image, or feature hidden in software, a video game, a film, or another, usually electronic, medium. Another Easter egg can be found in a tooltip when a mouse pointer is hovered over the hedgehog. This image reveals an Easter egg when the hedgehog is clicked or tapped.

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