Hey. I'm 21, and not a parent, and probably come more from your perspective than a lot of people. I live at least most of the year with my parents, and my mother can be very strict, and she does not like video games as a general rule.
First, let me say that your mom isn't being unethical, she is definitely acting in line with her ethics. What you are asking is, is she overreacting?
I think that she might be, but my question is, what are YOU going to do about it?
Let me explain. As a gamer and Christian, I can assure you that WoW is just a game. However, I also am aware that many people think that "game" means "an object that temporarily suspends reality around the player". The fact is, the things that you do while playing WoW matter just as much as the things that you do at home or at church.
No, I'm not talking about whether you play a warlock or a paladin. Don't be ridiculous. I'm talking about how you act -- Do you represent God, love, and truth, or do you try to escape them and do "your own thing".
Whether or not WoW is a source of evil is largely up to you. Are you going to act in a responsible manner that would make your Mom proud, or are you going to use WoW to try to escape from your Mom and create a stronghold where you have the freedom to get away from her rules?
I'll warn you, whatever you do in WoW has just as much impact on your life, whether physical, spiritual, or relational, as what you do in "Real life". WoW IS real life. It just happens to be a game in real life. But that doesn't make it any less real.
A possible solution.
So, what do I suggest?
Well, it just so happens that I in fact HAVE been in the same situation as you. Two weeks after I bought WoW, my Mum turned around and told me that she thought it was evil. Currently, I'm well into my second year of WoWing, WITH my Mother's blessing. Here are the steps that I took to get my Mum to look at it differently.
1. First, make SURE that you honor your Mother. FIRST. And, as much as it may suck, that means STOP PLAYING. Just... stop. Don't burn the game or throw it out or anything, just say something like, "Mom, I realize that playing this game bothers you, so I am going to make sure that it is okay before I play it again." and stop.
2. Then, take matters into your own hands. Don't wait for your mom to "report you to your pastor". Call him up yourself and go see him. Take the game, the box, and all the stuff that came with it. Don't hide anything. Let him look at all the pictures he wants to, and let him read any words he wants to. Chances are, he is well respected by your mother, and if he is led by the Holy Spirit, which I sincerly hope he is, he will be able to tell you if God wants you to play the game or not.
Remember, God is a person, just like you or me. He's not just going to screw you over because He is mean or something. God is capable of thinking through things and quite frankly can do so much more effectively than you or I. He told me that I'd get out of WoW what I put in, so I've been working to put good things into it. But, He may tell you that He doesn't want you playing it. Or He may tell you that playing WoW is an integral part of His plan for your life right now. It can't hurt to ask, can it?
3. Listen. If he says it is evil, you're really out of luck, my friend. Remember that it is more important to be at peace with your mom than to be able to play WoW. There are other games out there that you could be playing.
But believe me, if you take the initiative, you will have impressed your Mom that you actually value her, and that will make living with her all the much more easy. If you make her have to drag you, kicking and screaming, to the pastor and then fight you to make you let go of the game, you will simply reinforce the idea in her mind that you are unable to desern good and evil for yourself.
Do the right thing and I hope you get to keep playing, but in either case, DO THE RIGHT THING.
God bless,
Neirai the Forgiven
*PS: I don't think there is such a thing as taking Christianity too seriously. I think what your mom is doing is taking evil too powerfully. Remember, God Is MORE Powerful Than Evil. It is truth!!