What Peripheral Allowed Two Players on Commodore 64

This article provides a concise overview of the hardware that enabled simultaneous multiplayer gaming on the Commodore 64. It identifies the specific gaming peripheral used for this purpose and explains how the computer’s built-in architecture supported two-player experiences without requiring additional adapters. Readers will learn about the standard input devices and the technical features that made the system a pioneer in home multiplayer gaming.

The Commodore 64, released in 1982, stands out in computing history for its built-in support for simultaneous two-player gaming. The specific gaming peripheral that allowed two players to play simultaneously was the standard joystick. Unlike many contemporary systems that required a multitap or special adapter to connect more than one controller, the Commodore 64 was designed with two dedicated 9-pin D-sub connector ports on the side of the machine. These ports allowed users to plug in two separate joysticks directly, enabling immediate competitive or cooperative play.

Popular third-party joysticks, such as the Competition Pro, became synonymous with the platform due to their durability and responsive microswitches. Games like International Karate, Giana Sisters, and Bubble Bobble utilized these dual ports to let friends compete side-by-side. While the computer also supported other input devices like paddles or the 1351 mouse, the joystick remained the primary peripheral for action-oriented two-player sessions. This hardware design choice significantly contributed to the Commodore 64’s longevity and popularity in the home gaming market.

The ability to use two joysticks without extra hardware gave the Commodore 64 a distinct advantage over competitors like the Atari 2600, which often required swapping controllers or lacked native support for certain multiplayer configurations. By integrating the necessary connectivity into the motherboard, Commodore ensured that the barrier to entry for multiplayer gaming was low. Today, this feature is remembered as a key factor in the system’s enduring legacy among retro gaming enthusiasts who still host tournaments using the original dual-joystick setup.