What is "intellivision"

The Intellivision is a home video game console released by Mattel Electronics in 1979. Development of the console began in 1978, less than a year after the introduction of its main competitor, the Atari 2600. The word intellivision is a portmanteau of "intelligent television". Over 3 million Intellivision units were sold and a total of 125 games were released for the console.

In 2009, video game website IGN named the Intellivision the No. 14 greatest video game console of all time. It remained Mattel's only video game console until the release of the HyperScan in 2006.