Valve ‘Chell’ Steam Controller Prototype Found at Seattle Goodwill Store

A Valve “Chell” Steam Controller prototype was found at a Goodwill store in Seattle, only a few miles from Valve’s headquarters. The controller still powers on and works as a generic gamepad more than a decade after it was built. Photos shared on Reddit quickly caught the attention of the Steam community, where users identified it as an early development unit dating from around 2013 or 2014, before the retail Steam Controller reached stores in November 2015.

The controller was purchased by the father of a Reddit user while browsing the thrift store. He picked it up simply because his son has been a longtime Valve fan. After the photos were posted online, several community members recognized the hardware as the rare “Chell” prototype, a version that never entered commercial production.

This is the second known case of a “Chell” prototype being discovered at a Seattle-area Goodwill store. An earlier unit surfaced several years ago, making finds like this extremely uncommon outside Valve’s development history.

The prototype looks very different from the Steam Controller that later reached consumers. Instead of combining a thumbstick with touch controls, this early version relies entirely on two large circular touchpads. Valve’s original concept placed touch input at the center of the controller instead of traditional analog sticks.

Its button layout is just as unusual. The face buttons sit much closer to the middle of the controller rather than on the right side, while the Start and Select buttons are positioned along the lower edge. The layout gives the prototype a very different appearance from modern Xbox and PlayStation controllers.

The controller is more than a collector’s item. After connecting it to a PC, the new owner confirmed that it still works as a generic controller. The four buttons in the center function as a directional pad, showing that the hardware remains operational despite being more than ten years old.

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Valve changed several parts of the design before the retail Steam Controller arrived in 2015. The finished version kept the dual touchpads but added an analog stick and moved the buttons into a more familiar arrangement. Those changes created the controller that eventually reached customers.

Working Valve prototypes rarely become publicly available, which makes discoveries like this highly unusual. For collectors and gaming historians, the “Chell” controller provides an early snapshot of Valve’s hardware development and preserves a piece of PC gaming history that very few people have had the chance to see.

Source: Reddit