Fed up with my husband

So I'm at my witts end with my husband. About 4 or 5 months ago he discovered the game 'clash of clans.' He has never been one to play any type of game until this one. My problem is he is completely addicted. He literally plays it every waking second, he always has it in his hand or beside him with the screen open to watch what's going on. This is even when our child is trying to play with him, when we are out any where, when we are visiting friends or friends are visiting us, and even when were supposed to be spending time together. He has completely shut himself out from everyone. This is really impacting our relationship, he barely interacts with me at all anymore, doesn't help with our son or around the house and I'm really starting to get depressed and overwhelmed with what our life has become. He thinks I'm being ridiculous when I try to tell him how I feel about this and says theres no way he is getting rid of the game. I just don't know what to do anymore. We have been together for 7 years and had an amazing relationship until this game came along. I feel very unappreciated, disrespected and truly feel like he would choose that game (and his game 'buddies') over me. I should also mention that I'm 21 weeks pregnant with our second child and am completely terrified to try to basically be a single mother of two when this baby comes in July. I would love some advice from anyone who has some. Thanks!