In this case, it's family so I really can't. I get the feeling that they feel intimidated by me by the fact that I am a dropout with better career prospects than them who have degrees and can't get an interview. Life is full of irony.
Even with family, I don't think I could engage with a game like that. I guess in your situation I'd try and be friendly and kind to them but also try and find friendship/support outside your family.
Just because they're family doesn't mean you have to fully engage with everything they do.