A Sony employee has gone beyond the call of duty to create a customised controller for an avid gamer with cerebral palsy.

Gamer Peter Byrne, 21, contacted PlayStation two weeks ago to explain how his condition was interfering with his use of the game console’s controller.

“When I use the PlayStation 4 controller my game constantly pauses because my left hand hits the touchpad, which is frustrating for me,” he said on Facebook .

The email, which appears to have been sent to a restricted PlayStation email address, was received by Retail Marketing Operations employee Alex Nawabi.

Mr Nawabi said the email “struck a chord within”, inspiring him to custom-assemble a new controller for him for Mr Byrne.

A week later Mr Byrne received a box containing a typed letter from Mr Nawabi and a new DualShock 4 controller.

According to the letter, the new controller has a disabled touchpad, with the function now rerouted to a button on the back.

It purportedly took over 10 hours of labour and required three other controllers to build.

Employee Alex Nawabi helped find the solution. (Facebook/ Peter Byrne)

Mr Byrne said he was deeply moved by the gesture.

“I honestly got choked up reading the letter as I did not expect anything like this to happen,” Mr Byrne said..

“Mr Nawabi really cared about my situation and did this on his own time to make my experience better.”

Cerebral palsy is an umbrella term referring to a group of disorders affecting a person's ability to move.