Entertainment Computer System
The add-on module essentially added three features to the Intellivision: an additional 2K of RAM, a second sound chip and the option of plugging in a computer keyboard, a music keyboard or an additional two hand controllers.
A slate of games was started in 1982 and 1983 to take advantage of these features: and utilized the extra memory, showed off the dual sound chips and music keyboard, educational game used the computer keyboard and two sports games, Doubles Tennis and Super NASL Soccer, were designed so that two teams could compete using four hand controllers.
Still, the ECS could never shake its origin: it was rushed into production to take the place of the more ambitious but non-cost effective . Neither Marketing nor the Applications Software department were ever enthusiastic about the ECS and struggled for game ideas that would justify its existence.
Just as the ECS and the first games were hitting the market in mid-1983, a new management team took over Mattel Electronics that was even less enthusiastic about the module. The Entertainment Computer System received little advertising or distribution support.
As a result, two of the best Intellivision games - and - got far less attention and sales than they deserved.
- BASIC Programmer (unreleased)
- Doubles Tennis (unreleased)
- Flintstones Keyboard Fun (unreleased)
- Game Factory (unreleased)
- The Jetsons'® Ways With Words
- Melody Blaster
- Melody Maker (unreleased)
- Mind Strike
- Mr. Basic Meets Bits 'N Bytes
- Music Conductor (unreleased)
- Number Jumble (unreleased)
- Scooby Doo's® Maze Chase
- Super NFL Football (unreleased)
- Super NASL Soccer (unreleased)
- World Series Major League® Baseball