- The Atari Video Computer System, later known as the Atari 2600, but best known as just the “Atari” during its heyday, was the first really successful home video game console system, and only the second to feature interchangeable ROM cartridges that allowed new games to be published and installed without modifying the basic system itself. It also featured plug-in controllers that could be swapped out, allowing new kinds of controllers to be later introduced. Originally, just ten games were planned for it. The idea was to make a better system down the line to replace it eventually but the success of the system changed everything.