Xero, I'm not sure how your example about the wet shirt ties into this situation.
Rachel, while I don't have anything against somebody who plays video games (I used to play them myself but I just don't have time anymore), if he would rather play games than have sex, it sounds to me like you're married to a boy, not a man. Have you done anything to try to turn him on? This could be anything from massage to cuddling to dirty talk.
This is something I saw in a movie once, and I'm not going to promise that it will work, I'm just throwing it out there as an idea and hopefully you get where I'm going with it. I forgot the title of the movie (and I don't feel like looking it up right now) but Vince Vaughn and Jennifer Aniston were in it. There's a scene where Vaughn is playing his Xbox 360 and his full attention were in the game and all of a sudden Aniston walks out completely naked to the kitchen. She doesn't make eye contact with him but she puts a smile on her face when she walks back to the room while Vaughn has a priceless look on his face looking in her direction. At this point, he is oblivious as to what is going on in the game.