I haven't played the Mass Effect series... I have a friend that does have it though and he loves them.
But here is my two cents... As long as they aren't pushing it on me (if I played the games) then it's no biggie to me. Homosexuality is a sin to me, but I'm not a "homo-phobe". Personally, I would like to know how many of these people were sexually abused when they were little, because to me I think that's what it usually boils down to. I pity them.
Pity - Noun: The feeling of sorrow and compassion caused by the suffering and misfortunes of others.
It may be a choice to be gay (I believe it is), but I see it as holding onto a wound. To the point that they accept it as part of them and make the choice to proudly display it after they have hidden it for awhile. Just like with any other wound. "So-and-so did this to me... therefore instead of acknowledging that it hurt me and forgiving that person I'll bury deep down inside where no one will see it" And then boom it's manifested itself in your thoughts, actions, and speech. Pray for these people, cause they already condemned. Let's not belittle them.
Once I was in an elevator at work and my homosexual co-worker gave me a compliment and made joke that if I wasn't straight he would allow himself to admire me. I accepted his compliment and said,"Dude, you probably already do, but you know I'm straight and that I'm opposed to it." And he completely understood. He actually came from a Baptist family as well. Kept it hidden and moved out as fast as he could. I haven't said a prayer for this guy in awhile, but I wonder what happened to him. Hopefully he gives his life to Christ before it's too late. He liked video games just as much as we all do.
Read Romans 14 concerning this gaming stuff. There are grey areas in the bible or "disputable matters" (NIV) or "doubtful disputations" (KJV) Let's not quarrel over these things or question these things. It's a matter of personal faith. If your neighbour has a problem playing Mass Effect then they can enjoy other games. If you don't have a problem with it then don't get caught up in religious dogma, because if when you do your mind becomes double minded (James 1:8) and that can get you in a confusing mess. And we all know who ISN'T the author of confusion (1 corinthians 14:33).
I like long hair and I'm a guy... And SO many christians can't stand a man with long hair cause they go back to that one scripture in the bible. (1 corinthians 11:14) ... But instead of passing judgement how about we all do this... Romans 14:13 "Let us not therefore judge one another any more: but judge this rather, that no man put a stumblingblock or an occasion to fall in his brother's way."