[2][3] In 1982, Coleco released Expansion Module #1 for its ColecoVision video game system.

[5][6] The main difference between the Coleco Gemini and the Atari 2600 is the controller design.

[7] The Gemini was more compact than the large faux-woodgrain or gloss black-trimmed consoles sold by Atari at the time.

The Gemini initially came bundled with Coleco's 1982 port of Donkey Kong,[9] 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.