By taking him outside and giving him much interest :P
Well, the first thing you should always do is try to talk to him about it. If that doesn't work, then he obviously is more interested in his games and you may have to consider just ending it.
Smash his game system and say something super dramatic, lol
why not ask to play video games together? then ask later to do something else that you like.
did you ever talk to him to lay of the games? Because if it's a yes, then you need to hide his games for a day, and demand that he does something with you instead of playing his games. It's a partnership. He needs to spend time with you too.