casting spells,killing,mitischal,demons inWorld of warcraft sin?

I am going to make your life a lot easier, when it comes to things that are not in talked about in the Bible (i.e. anything involving video games) if you feel guilty or that said activities are affecting your walk with God don't do it if they don't bother you and it doesn't affect your Christian life then go for it. To give my own example I like to listen to music that most Christians would say is absolutely a sin but it doesn't affect my walk with God so at that point it is a matter of my own Christian liberty but if it ever does start to affect my Christian duties then it is my fault and I need to handle it. So to put it short and sweet if it doesn't bother God its up to you.

if the holy spirit convicts you you should stop... any doubt or wonder of whether you should be playing it should start to make you think about what you are playing. if you are spending more time playing WoW, a very addictive game, than with god, or spend most of your time playing and thinking about it you should probably stop. think about what God thinks about you playing these types of games

Wow has a very "hateful" background from a lot of players. I'm a gamer myself (though I make sure it doesn't affect my walk with God) and I've tried WoW on 3different occasion - non of which were pleasant experiences. I stopped because of the anger I would feel towards people and how they treated. I found I was becoming like them and I stopped.

Now onto a much more light note. I have played Final Fantasy XIV since alpha and the players there I found Are so much more relaxed and know this is just a game. Players are more uplifting. Also limit my play time and don't go passed that. It just depends on how much you play and what you're playing and always know what's fantasy (magic, etc) vs reality (God).