The Playstation 4 Controller Prototype and Breakdown – SideQuesting
Developer Jeff on X: "Prototype Playstation 4 Alpha Controller "JDX1000" https://t.co/bKCMu6XDod" / X
These PlayStation 4 controller prototypes may have been forged in the depths of hell - MSPoweruser
Sony Computer Entertainment Unveils The New Prototype Of "Project Morpheus" - A Virtual Reality System That Expands The World Of PlayStation®4 (PS4™) | Sony Corporation of America
Prototype: Biohazard Bundle - PlayStation 4 GameStop Exclusive | PlayStation 4 | GameStop
Rare Playstation 4 Prototype Controller! : r/playstation
PlayStation 5 prototype photos surface online (updated) | TechSpot