Saying "I want to get into games" is like saying "I want to have something to do with buildings". Laying the bricks, engineering anti-seismic structures, or decorating the interiors? :)
First thing I'd try and push him for is to form some rough idea of what he likes in a game and how he feels he'd like to contribute (code, art, assets, level design etc.). If he says he wants to be the one that comes up with the ideas (lead game designer), then I think you're allowed to slap him in on the neck repeatedly. If he wants to become a producer you need to change your daughter's mind in regards to this boy :p -- Our users will know fear and cower before our software! Ship it! Ship it and let them flee like the dogs they are!

