In November 1997, Sony released a gamepad that would fundamentally alter how players interact with video games, introducing the DualShock controller. This device was not merely an input device but a revolutionary tool that brought vibration feedback to the mainstream gaming experience. The DualShock, originally marketed as a secondary peripheral for the first PlayStation console, quickly became the standard for the platform. It was named for its dual vibration motors, which were housed within the handles, with the left motor being larger and more powerful than the right one to allow for varying levels of vibration. This innovation set it apart from competitors like the Nintendo 64's Rumble Pak, which used a single motor and required a battery, whereas the DualShock was powered directly by the PlayStation and featured two motors. The DualShock became the best-selling gamepad of all time by units sold, excluding bundled controllers, marking a significant shift in the industry's approach to haptic feedback.
Designing the Language of Play
The DualShock controller's design was deeply rooted in cultural symbolism and user experience, a decision made by designer Teiyu Goto. The face buttons, featuring a green triangle, a red circle, a blue cross, and a pink square, were not chosen arbitrarily. Goto explained that the circle and cross represented 'yes' and 'no' respectively, reflecting common Japanese cultural norms, and were typically used for 'confirm' and 'cancel' in most PlayStation games in Japan. The triangle symbolized a point of view, while the square was equated to a sheet of paper, used to access menus. In Western releases, the circle and cross functions were often switched, with circle to cancel and cross to confirm, or reassigned to a different button. The DualShock also introduced two analog sticks with 8-bit precision, a feature that was initially controversial but eventually became a standard. The controller included a dedicated 'Analog' button to switch between analog and digital modes, with a red indicator light denoting analog functionality. The analog sticks featured textured rubber grips with convex domed caps, a design choice that improved grip and control compared to the smooth plastic tips of the Dual Analog controller.
The Evolution of Feedback
The DualShock controller's legacy was built on its ability to evolve with the gaming landscape. In 2000, Sony released a redesigned version of the DualShock controller, the SCPH-110, for the PSone console. This version featured a 'PSone' word mark replacing 'PlayStation' underneath the logo, a purple hue on the buttons and sticks to match the color scheme of the PSone, and a semicircle-shaped connector. The standard color of the controller was white, matching the color of the redesigned console. The DualShock 2, released with the PlayStation 2 in 2000, was almost identical externally to the previous DualShock analog controller but included minor cosmetic changes. It had different screw positioning and one fewer screw, a blue DualShock 2 logo added to the top of the controller, and a more square-shaped connector. The analog sticks were stiffer than on the original DualShock, and internally, the DualShock 2 was lighter and all of the buttons (except for the Analog mode, start, select, L3 and R3 buttons) were readable as analog values, sensing 256 levels of pressure. The DualShock 2 was made available in various colors, including black, satin silver, ceramic white, slate grey, clear, ocean blue, emerald green, crimson red, lemon yellow, and candy pink.
The DualShock 3, announced at the 2007 Tokyo Game Show, marked a significant leap forward in wireless technology and haptic feedback. It succeeded the Sixaxis wireless controller, which lacked vibration capabilities due to a patent infringement lawsuit with Immersion. Sony settled the lawsuit in March 2007, clearing the way for incorporating the vibration feature that the Sixaxis lacked. The DualShock 3 was nearly identical to the previous Sixaxis version but added haptic feedback capabilities, allowing both the vibration function and motion-sensing capabilities to be used simultaneously without one interfering with the other. The controller weighed 40% more than its predecessor, the Sixaxis, and drew up to 300 mA of current at 3.7 V for a power consumption of 1.11 W, an order of magnitude increase from the 30 mA of current at 3.7 V (0.111 W) listed on the Sixaxis. The DualShock 3's main power source was an internal 3.7 V Li-ion battery, tentatively capable of storing 570 mAh, which provided up to 30 hours of continuous gaming on a full charge. The controller could also draw power over a USB cable via a USB mini-B connector on the top of the controller, allowing it to be used when the battery was low and used for charging the battery.
The Touch Pad Revolution
The DualShock 4, released with the PlayStation 4, introduced a new era of controller design with the addition of a built-in two-point capacitive touch pad on the front of the controller. This feature allowed the touch pad to represent multiple buttons, as demonstrated in the PS4 version of Elite Dangerous, where the four corners of the touch pad could be mapped to separate clickable actions. The controller supported motion detection via a three-axis gyroscope and three-axis accelerometer, and vibration. It included a rechargeable 3.7 V, 1000 mAh lithium-ion battery, which could be charged while the system was in rest mode. The front of the controller featured a light bar containing three LEDs that, when lit in conjunction, caused the light bar to glow a variety of colors. Developed for PlayStation VR, it could be used to identify players by matching the colors of the characters they control in a game, or to provide enhanced feedback or immersion by changing patterns or colors in reaction to gameplay. The controller also included a mono speaker, like the Wii Remote, and was the second major controller in video game history to have such a feature. The DualShock 4's buttons differed slightly in functionality from the DualShock 3, with only the L2 and R2 triggers having any kind of analog input, as all of its buttons (aside from the analog sticks) were changed back into digital inputs for the first time since the original DualShock.
The Adaptive Future
The DualSense, unveiled on the 7th of April 2020, represented the latest evolution in PlayStation controller design, building on the foundation of the DualShock 4. It was primarily white with black facing, and its monochrome action buttons were the first non-colored action buttons for a standard PlayStation controller. The DualSense's more ergonomic design was bigger, rounder, and heftier than the DualShock 4, with the light bar moved from the top of the controller to the horizontal edges of the touchpad. The 'Share' button was replaced with 'Create' to emphasize creating content to share. The DualSense supported vibrotactile haptic through voice coil actuators in the palm grips, and the analog triggers, dubbed 'adaptive triggers,' now had a force feedback mechanism provided by two DC rotary motors. The actuators enabled games to provide varied feedback, such as feeling the wind and sand in a sandstorm, while the adaptive triggers provided varying levels of resistance to the user depending on game actions. An example provided by Sony was being able to feel the tension of a bow string as the user pulled the trigger. Connectivity included a 3.5 mm audio jack, USB-C, which replaced the microUSB port on the DualShock 4, and copper pins for use with charging docks. The controller speaker provided a clearer sound, and the controller also had a dual-microphone array, allowing players to communicate without an external headset and enabling Sony to introduce voice typing to the PS5.
The Hidden Details
Beneath the surface of the DualSense controller lies a hidden easter egg that showcases Sony's attention to detail. The controller features a unique microtexture, with 40,000 tiny symbols stacked on top of each other, consisting of the four PlayStation button symbols: triangle, circle, cross, and square. Multiple designs were hand-drawn, digitized, and made as prototypes before the design team settled on the current design. The larger symbols are half a millimeter wide, and the microtexture was applied to the DualSense controller's entire lower shell, making it Sony's most grippable gamepad yet. These tiny symbols are stacked on top of each other, jutting out in three dimensions, and are not a single, evenly spaced layer. Morisawa, the senior art director of Sony's Design Center product design group, explains that a variety of designs were handcrafted, digitized, mocked up, applied to actual prototype gamepads, and tested over and over again until the teams found the balance they wanted: good-looking, textured enough to be comfortable and non-slip, but not so sandpaper-rough that it'd hurt your hands over a lengthy gaming session. However, the one downside to the microtexture is that it picks up dirt extremely easily and doesn't want to let go.
Legacy and Legal Challenges
The DualShock line of controllers has left an indelible mark on the gaming industry, earning a Technology & Engineering Emmy Award for 'Peripheral Development and Technological Impact of Video Game Controllers' by the National Academy of Television Arts and Sciences on the 8th of January 2007. However, the DualSense has become a subject of a class-action lawsuit due to a perceived drift in one of the analog sticks, being litigated by the same firm that is challenging Nintendo for a similar drift issue in its Joy-Con controllers for the Nintendo Switch. Despite these challenges, the DualShock line has continued to evolve, with the DualSense Edge, unveiled in August 2022, offering more capabilities. The DualSense Edge has a more modular design than the DualSense, featuring replaceable analog stick modules, interchangeable analog stick caps, rear paddle buttons, adjustable trigger lengths, multiple control profiles, and customizable mapping inputs. It also includes a lockable braided USB-C cable. The DualSense Edge was released on the 26th of January 2023, on PlayStation Direct, then sold through other retailers beginning on the 23rd of February 2023. The DualShock line has been produced in various colors, including white, cosmic red, midnight black, galactic purple, nova pink, starlight blue, gray camouflage, cobalt blue, volcanic red, sterling silver, chroma indigo, chroma pearl, and chroma teal. Sony has also released limited/special editions of the DualSense, which includes controllers themed after God of War Ragnarök, Hogwarts Legacy, LeBron James, Final Fantasy XVI (Japan Only), Marvel's Spider-Man 2, Concord (US Only), two Astro Bot versions, Fortnite, the PlayStation 30th Anniversary, Helldivers 2, Monster Hunter Wilds (Japan Only), The Last of Us, Death Stranding 2: On the Beach, Ghost of Yōtei, and the twentieth anniversary of the God of War franchise.