By publishing guidelines like these, Apple can help developers adapt their titles for a specific controller design, which means you shouldn't need special controllers for different games. (cultofmac.com)
Sometimes PC accessories can be more innovative than their console counterparts and PC gaming also has some unique genres like flight sims not really found on consoles that require special controllers. (lifewire.com)
That meant purchasing more downloadable content, more patches, and more special controllers with touch pads that overdid the simple function that the guitar controller should do — not everyone wants to spend another 60 dollars for a controller that has no other use apart from playing either game. (arcadereview.net)