Kee Games was an arcade game manufacturer that released games from 1973 to 1978. Kee was headed by Joe Keenan, a long-time friend of Atari co-founder Nolan Bushnell. Keenan managed to hire several defectors from Atari, and began advertising itself as a competitor. In reality, Kee Games was a wholly owned subsidiary of Atari, created in response to the pinball and arcade distributors of the time who demanded exclusivity deals. Kee Games released several "clones" of Atari games, allowing Atari to "exclusively" sell games to two distributors at once.
Source: Wikipedia, "Kee Games," available under the CC-BY-SA License.