32 year old addicted to video games...?

Like most addictions, like alcohol and drugs, he needs to be weaned out of his addictions and go into "rehab". Try to get him to give up an hour of his game time to do something, like a snack break or a quick game of basketball, then add another hour for a movie and then another, over time, usually, once he gets to like another activity outdoor, he'll eventually give up his game addiction, just don't expect him to give it up overnight. Most hardcore players get bored after reaching high levels so that's usually the time to try to wean them away, when they're in between that old game and thinking of taking up another game.