Backbone One review: The controller that Apple should have made

The first official PlayStation-friendly iPhone controller is a Backbone One - The Verge

Backbone One - Wikipedia

Backbone One Review - IGN

Backbone One PlayStation Edition Controller Review: iPhone Gaming Champ - CNET

Backbone One - iOS PlayStation Edition - Reviewed - Gadgetoid Gadgetoid

Backbone One review: turn your iPhone into a powerful handheld game console

Backbone One Mobile Gaming Controller for iPhone (FREE 1 Month Xbox Game Pass Ultimate Included)

Backbone One PlayStation® Edition - iPhone Game Controller

Backbone One Review: A Perfect Controller for Gaming on the Go

Backbone One for iPhone review: Clever clip-on game controller