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Intellivision modding wiki

Explore Intellivision modding, repairs, homebrew, hardware upgrades, and technical references. Find a guide for your console and follow the steps.

Intellivision.png Intellivision II.png Sears Tele-Games Super Video Arcade.png

The Mattel Intellivision is a console from the second generation of video game consoles, initially released to a limited test market in 1979 and receiving a nationwide release in 1980. Based off a chipset from General Instruments, the Intellivision was the first game console to feature a 16-bit CPU and its games generally featured more sophisticated gameplay than those of its competitors. To this end, Mattel engaged in an aggressive marketing campaign starring sports journalist George Plimpton, which pitted the Intellivision directly against the Atari 2600. The console sold fairly well during the early 1980s, enough to the point where Mattel introduced a smaller, cost-reduced system (the Intellivision II) in 1983. Although Mattel ultimately exited the video game market in the aftermath of the 1983 crash, a company known as INTV Corporation acquired the rights to the Intellivision and began selling games and consoles until 1990. The original Intellivision currently enjoys a small but dedicated following, with a steady stream of homebrew titles coming out every year.

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IntellivisionIntellivision:Connector PinoutsCartridge Port Note: Odd-numbered pins are located on the bottom of the connector and numbered from left to right. Even-numbered pins …Updated Oct 9, 2026IntellivisionIntellivision:Fred Kono RGB ModFor many years, the only video modifications for the Intellivision in existence only involved adding composite video or S-video. In 20…Updated Oct 9, 2026IntellivisionIntellivision:General TroubleshootingIf your Intellivision is having issues, check the below general troubleshooting information for help. NOTE: If the RF modulator has be…Updated Oct 9, 2026IntellivisionIntellivision:Intellivision Model DifferencesSeveral different models of the Intellivision exist, with most being a cosmetic variation of the original design. Mattel Intellivision…Updated Oct 9, 2026IntellivisionIntellivision:List of Intellivoice GamesReleased in 1982, the Intellivoice was an Intellivision add-on which added voice synthesis to a select number of games. Although Matte…Updated Oct 9, 2026IntellivisionIntellivision:Power Connector ModNote that the power cord you will be splicing in carries line voltage. Make absolutely sure that your splice does not have exposed wir…Updated Oct 9, 2026IntellivisionIntellivision:System Changer ModificationMost page content & researching taken from the procedure on the Intellivision Wiki, which was released to the public domain by its aut…Updated Oct 9, 2026IntellivisionIntellivision:Yannick RGB ModOne option for RGB output on an Intellivision is to use the Yannick RGB board. Note that you will need to either cut a hole in the cas…Updated Oct 9, 2026