|Manufacturer||Coleco Industries, Inc.|
|Type||Video game console|
|CPU||MOS 6507 @ 1.19 MHz|
|Memory||RAM: 128 bytes|
|Display||160x200, 128 Colors |
|Controller input||Combination joystick/paddle controller|
|Related articles||Atari 2600|
In 1982, Coleco released Expansion Module #1 for its ColecoVision video game system. Using off-the-shelf components, the module enabled the ColecoVision to be compatible with Atari 2600 software. Later that year, Atari, Inc. sued Coleco for patent infringement, and the companies wound up settling out of court, with Coleco becoming a licensee of Atari's patents.
Gemini vs. 2600
The main difference between the Coleco Gemini and the Atari 2600 is the controller design. The Coleco Gemini controllers (dubbed the 'Dual Command') featured an 8-way joystick and a 270-degree paddle on the same controller (the joystick was at the top of the controller, and the paddle was at the bottom of the controller). To play paddle games on the 2600, a Y-connector could be used to connect a joystick and paddles to the controller jack at the same time, rather than physically swapping controllers.
The Gemini was more compact than the large faux-woodgrain or gloss black-trimmed consoles sold by Atari at the time. The Gemini also had a different game included with the system. Atari was including its version of "Pac-Man"  along with the Combat game released in 1977. The Gemini most commonly included Donkey Kong, but at some point also included Carnival, Mouse Trap and Front Line. Sears also offered a version of the Gemini with both Donkey Kong and Mouse Trap included as separate cartridges.
- "Coleco Gemini". Old Computers.com. Archived from the original on September 11, 2019. Retrieved November 12, 2019.
- Baker, Kevin (2013). The Ultimate Guide to Classic Game Consoles. eBookit.com. pp. 69–71. ISBN 978-1456617080.
- Baskerville, Tim (February 26, 1983). "Coleco, Atari Going One-on-One in Expansion". Billboard.
- "Coleco Industries Is Sued by Atari". The New York Times. New York, NY. December 9, 1982. Retrieved April 17, 2016.
- "Coleco, Atari settle up". The Associated Press. The Ledger. March 13, 1983. p. 51. Retrieved November 11, 2019.
Under their settlement, the companies said Coleco could continue making and selling its Expansion Module No. 1 and its free-standing Gemini Video Game System. However, Coleco will do so as a licensee of Atari's patents.
- "Company News: Atari-Coleco Pact". The New York Times. New York, NY. March 12, 1983. Retrieved April 17, 2016.
- Sittnick, Mike (December 1983). Sharpe, Roger C.; Canole, Patricia; Greenberg, Perry (eds.). "Coleco's Gemini: The Dual Purpose Game System". Video Games. Vol. 2 no. 03. Pumpkin Press.
- "Image of box with Pac-Man sticker".
- 1983 Wish Book. Sears. 1983. p. 597. Archived from the original on July 10, 2017. Retrieved June 26, 2019.
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