The Atari 2600 was developed by Atari, Inc., with the core engineering work carried out at its subsidiary Cyan Engineering. The central problem the team was trying to solve was how to build a home console capable of playing a wide variety of games rather than being locked into a single title.
In the mid-1970s, Atari was generating solid revenue from arcade games, but each arcade machine ran on custom hardware built specifically for that game. Development costs ran above $100,000 per game, and each machine had a limited commercial lifespan before becoming obsolete.
Atari’s CEO Nolan Bushnell wanted a programmable home system built around an affordable new microprocessor, such as the MOS 6502, that could run an unlimited variety of games through swappable cartridges. The project was developed under the internal codename Stella.
Several key figures shaped the console’s development. Steve Mayer and Ron Milner at Cyan Engineering built the initial prototype in late 1975. Jay Miner designed the Television Interface Adaptor, the custom chip responsible for graphics and sound. Joe Decuir helped debug the prototypes and contributed to the system’s development. Bushnell’s decision to sell Atari to Warner Communications in 1976 brought in the funding needed to complete the project.
The Atari 2600 represented a substantial leap over the Magnavox Odyssey that had preceded it. The Odyssey, released in 1972, had no processor, no sound capability, no color output, and ran on batteries. It displayed simple white shapes on screen, and players attached plastic overlays to the television to simulate color. The 2600, which arrived in 1977, was a genuine computing device equipped with a 1.19 MHz CPU, 128 bytes of RAM, color graphics, and sound. Rather than the jumper cards the Odyssey used to reconfigure its circuits, the 2600 played cartridges containing actual executable code, allowing it to run hundreds of distinct and complex games. The Odyssey was an inventive novelty; the 2600 was the first home system that functioned like a real computer.
At launch the 2600 was sold through major department stores including Sears, which offered its own branded version, as well as Macy’s and toy retailers such as Toys R Us, Kmart, and Kay Bee Toys. The console carried a launch price of around $200, which sounds modest today but represented a serious financial commitment at the time. Adjusted for inflation, that figure equates to roughly $850 to $1,000 in current dollars, comparable to purchasing a high-end modern gaming console. Individual game cartridges cost approximately $40 each, or around $170 in today’s terms. Despite the expense, widespread retail availability helped establish the 2600 as a household name across the United States.
Atari’s treatment of the programmers who built its game library turned out to be one of its most consequential mistakes. Developers received no credit on packaging or in documentation and were paid standard salaries with no royalties or performance bonuses regardless of how much revenue their games generated.
The situation came to a head when Rob Fulop, who created Missile Command, received a $10,000 bonus for a game that generated an estimated $30 to $40 million. That same year, four of Atari’s most talented programmers, David Crane, Bob Whitehead, Larry Kaplan, and Alan Miller, resigned together and founded Activision, which became the first third-party game developer in the industry. All four went on to earn substantial royalties from their work. The departure finally pushed Atari to begin offering royalty arrangements to the programmers it still employed.
One of the more obscure compatibility quirks of the 2600 is that a Sega Genesis controller fits directly into its controller port, as both use the same nine-pin connector. The B button functions as the primary fire button, and the C button can serve as a secondary input in some homebrew titles. The connection carries no risk of damage to the console, though a small number of games may respond oddly due to minor wiring differences between the two controller designs.
The wood-grain paneling on the 2600’s casing was not real wood. It was a printed plastic sticker, chosen because it gave the console a warm, premium appearance that fit well with the home furnishing aesthetics of the 1970s.
Flipping the black-and-white television switch while a game was running could trigger unusual behavior in certain titles, including glitches or effects that resembled cheats.
The E.T. the Extra-Terrestrial game, developed in just a brief five weeks, became notorious for its poor quality. Millions of unsold cartridges were ultimately buried in a New Mexico landfill, and the debacle is frequently cited as one of the factors that contributed to the video game industry crash of 1983.
In 2014 a programmer managed to get a stripped-down version of Doom running on the 2600, a remarkable demonstration of what could be coaxed out of hardware designed nearly four decades earlier.
The Pac-Man port was widely criticized for its visual shortcuts, including flickering ghosts and choppy movement. Disappointed buyers returned copies in significant numbers. Despite all of this, it became the single best-selling cartridge in the console’s history.
For most of its commercial lifespan, the 2600 outsold the Intellivision and ColecoVision combined, maintaining market dominance well into the period when those competitors were actively challenging it.
Some late-era cartridges, including Pitfall II, incorporated additional processing chips within the cartridge itself to extend the graphical and audio capabilities beyond what the console’s own hardware could produce.
Pac-Man holds the record for the best-selling 2600 cartridge with approximately eight million copies sold, despite the widespread negative reception. Space Invaders follows with more than six million, and it is largely credited with driving consumers to purchase the console in the first place. Donkey Kong, Pitfall, and Asteroids all sold in the millions as well. Even E.T., perhaps the most maligned game in the console’s library, moved close to three million copies on the strength of pre-release hype. Taken together, the sales record reflects both the power of strong arcade conversions and the enduring appeal of original titles like Pitfall, demonstrating that even the 2600’s most notorious failures managed to move substantial numbers.