The Intellivision is a home video game console released by Mattel. Development of the console began less than a year after the introduction of its main competitor, the Atari 2600. One of the slogans of the television advertisements for the system was "the closest thing to the real thing". It was released on October 1st 1979 for $299.00, which would equate to $996.19 today.
Unable to determine the exact date for the Intellivision release, but it occurred sometime in the October of 1979.
October 1st, 1979 Source: videogameconsolelibrary.com
Came with a pack-in game: Las Vegas Poker & Blackjack.