Video Game Athlete

A noun: One who excels in all video games due to their exceptional hand eye coordination and motor skills. They are able to begin playing a new game of any genre and adapt quickly and effectively.

Keith has never played Halo but he was still able to dominate his competitors as soon as he picked up the controller for the first time because he is a video game athlete.

"Dale, I can't believe you just got beat by Keith. You and your brother have been training for years!" -Geoff
"He's a video game athlete so he already had the necessary skills to dominate" -Dale