Epoch Cassette Vision

Background/History:
The Cassette Vision was released on July 30, 1981 by a Japanese toy company called Epoch. The system was said to have power roughly equivalent to the Atari 2600. One unusual feature of the Cassette Vision was its controllers. The controllers had two knobs each (one for horizontal movement, the other for vertical movement), and two buttons for each player. Start, Select, and power buttons were located in the center. In effect, the console and both controllers were one unit. Another unusual feature is that the individual game cartridges contain key components of the system functions, such as the RAM and video processor.
In 1983, a cost-reduced version of the Cassette Vision was made, called the Cassette Vision Jr. Controls were redesigned for this unit into 1 directional lever on the left side and 4 push buttons on the right side.

What Makes It Obscure?
Its Japan-only release, eventual overshadowing by the Famicom, and over three decades since release have relegated it to obscurity. It also wasn't very successful - though its successor, the Super Cassette Vision, saw more success. Only 12 games were released for the Cassette Vision before it was superseded by the Super Cassette Vision in 1984.