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E.T. may be called the worst game ever, but Atari's insane decisions is one of the reasons what crashed the industry in '83. They thought that making a poorly assembled game in a few weeks with a popular movie's name slapped on it would sell millions. AFAIK they made 12 million cartridges, hoping the game would be a system-seller for the Atari 2600.
EDIT:
E.T. was actually a pretty decent game for Atari standards. Pac-Man (for the Atari 2600) on the other hand...
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