Seven years later, another Steam Controller prototype just popped up at Goodwill, and I feel a Valve employee hates…
Another prototype of Valve's original Steam Controller has been discovered at a Goodwill store, seven years after the initial release. This particular prototype, a 'Chell' development unit, features only touchpads instead of a thumbstick, reflecting an earlier design direction for PC gaming controllers.
Retro Gamer
Original source
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