This is a clone of the Magnavox Odyssey and has 3 games. Like many systems from the 70's, it's a rare find.
Telstar Colortron
Released - 1978 Telstar Colortron
This upgrade of the Coleco Telstar (based on the newer AY-3-8500) is in color. Though it had less games than the Coleco Telstar it was still a hit.
Visicom
!CLONE OF THE RCA Studio II!
Released - 1978 Visicom/COM-100
This clone of the RCA Studio II had a few minor upgrades including color and a joystick (instead of computer keys). It was sold in Japan for 54,000 yen.
Pong Systems
Released - 1970's - 1980's
There are way to many pong consoles to list, so for now you'll all just have to be patient.
Coleco Gemini
!CLONE OF THE ATARI 2600!
Released - 1982
The Coleco Gemini was created in order for Coleco to regain the money they had lost (approx. 22 million dollars) when the extra million Telstar consoles they had made in advance became obsolete. Many people think that making extra systems in advance is stupid, but companies were doing it.
Coleco decided to take a gamble and clone the Atari 2600. They chose the 2600 because of it's vast popularity and success. Atari couldn't do anything about this because (just like in most cases back then) there was no copyrighted hardware in the Atari or any copyrighted software. The only difference between the Atari 2600 and the Coleco Gemini is the exterior. All the hardware is exactly the same.
Othello Multivision
!CLONE OF THE SG-1000!
Released (Japan)- 1983
Sold for 19,800 Yen, the Othello Multivision had 8 new games made for it which are abviously also compatible with Sega's SG-1000 models.
Coleco Telstar
Telstar Colortron
Visicom/COM-100
bravenet.com