Alienware's gaming controller prototype is what Microsoft should've built ages ago | TechRadar
Microsoft Prototype for Project xCloud Shows Split Xbox Controller for Smartphones - WinBuzzer
Atari 2600 - Wikipedia
Prototype PS4 controller photographed with touchpad interface | Trusted Reviews
Xbox Controller Prototype by CNC milling & 3D Printing - 3ERP
Valve Steam Trackball Controller
Official Steam Controller 2 early prototypes revealed by Valve (details in comments) : r/SteamController
N64 Controller Prototype Discovered and Analyzed | COGconnected
Talking Joystick Mouse : 12 Steps (with Pictures) - Instructables
Xbox Controller Prototype by CNC milling & 3D Printing - 3ERP
Valve Steam Trackball Controller
UNITHOR - A Brand New Joystick For Retro Computers by UNI-joy — Kickstarter
See rare prototype of the SNES PlayStation
Sony PS3 Prototype Controller Vector Illustration : r/AdobeIllustrator
eBay Watch: Another Prototype Controller, This Time For M2 | WIRED
Valve's Steam Controller Prototype Hands-On at GDC 2014 - YouTube
Video Game Controllers Through the Years
Video Game Preservationist Finds Rare Prototype N64 Controller And The Joystick That Should Have Been
/cdn.vox-cdn.com/uploads/chorus_asset/file/18298476/xbox_mobile_controllers.jpg "Microsoft's prototype Xbox controllers for phones look ideal for xCloud - The Verge")
Microsoft's prototype Xbox controllers for phones look ideal for xCloud - The Verge
Latest Valve Steam Controller prototype demoed in new video | Trusted Reviews
Here's the latest Steam Controller prototype - GameSpot
Valve's New STEAM CONTROLLER Prototype Hands-On Impressions! - YouTube
How Microsoft designed its inclusive Xbox Adaptive controller which lets anyone game | London Evening Standard | Evening Standard
A new direction for game controllers: Prototypes tug at thumb tips to enhance video gaming
Nintendo PlayStation: Ultra-rare prototype sells for £230,000 - BBC News
PlayStation 5 and controller with built-in screen 'prototypes' leak online – but fans think they might be FAKES | The Sun
Joystick - Wikipedia
