Valve's Steam Deck prototypes: the best, the worst, and the utterly cursed | Rock Paper Shotgun
Hands on with Valve's redesigned Steam Controller
GDC: Hands-on with Valve's Newest Steam Controller Prototype - IGN
Hands On With Valve's Steam Controller | PCMag
Valve's Steam Controller Prototype Hands-On at GDC 2014 - YouTube
See the Dramatic Evolution of Valve's Steam Controller | WIRED
Here's the latest Steam Controller prototype - GameSpot
Steam Machine (computer) - Wikipedia
Steam Community :: Guide :: Configuring the Prototype Steam Controller Binds
Steam Controller prototype version 2 impressions: Buttoned up | Ars Technica
Valve Steam Trackball Controller
Steam Controller "Chell" Prototype found at local Goodwill : r/ SteamController
New Steam controller prototype adds analog stick
I found a Steam Controller prototype at a store... Anybody able to help me identify where this one came from? : r/SteamController
Valve adds thumbstick to latest Steam controller prototype | Eurogamer.net
Valve Steam Controller review: Valve's new Steam Machine controller keeps touch pads, adds face buttons (hands-on) - CNET
Valve's Steam controller won't have a touchscreen after all | Expert Reviews
Valve's New STEAM CONTROLLER Prototype Hands-On Impressions! - YouTube
We hate Valve's Steam Controller because it's different | Engadget
How to design a gamepad: A look at Valve's Steam Controller prototypes - ExtremeTech
Steam Controller - Wikipedia
Steam Controller update lets you carry your custom configurations to any PC | VentureBeat
Hands on: Valve Steam Controller prototype | Digital Trends
