Europe created many different versions of the gaming Platform all with the same formations.
Developer - Many Different
Publisher - Many Different
Release - Late 1970’s
Platform - PC-50X Family
Number of players - 1P / 2P
They were released in the late 1970’s when the world was undergoing "PONG Madness". It seemed only natural that developers would create advancements to the original AY-3-8500 chip to incorporate color and even more games. This explains the amount of PONG systems since each machine contained a different chip. However things were handled different in some areas particularly in Europe.
Europe did not see the release of the Intellivision and Atari 2600 till the early 1980s. This allowed Pong to have a longer success. Rather then creating a new machine for each new chip, developers took the General Instruments popular line of chips and slapped them into cartridges. These carts were not like ROM carts used in later systems. They simply housed a specific General Instruments processor chip with pin outs to interface with a console. These were the PC-50X line of cartridges.
With the PC-50X cartridges available, console manufacturers were able to produce a machine that could play several games and market them at a low cost. The units were made in various countries and were marketed by Creatronic, Hanimex, ITMC, Rollet, GrandStand, Soundic and lord knows how many other manufacturers. There are literally over two hundred console variations that utilized this technology.