There is no official phobia that relates to World of Warcraft directly. The closest phobia unofficially would be Vidigameaphobia: A Fear of Video Games (link in the links section below).
Fear of the world can be known as "weroldphobia", and is generally a vague but real and irrational fear of the outside world.
The irrational fear is called a phobia; the experience or object that triggers a phobia could be called a phobic experience or object.
the only phobia of the fear of crickets is crickephobia
Bebuphobia...that is the fear or phobia of blueberries.
To have a phobia is to have a fear.
Mud Phobia is the phobia (fear) of mud. Its called mysophobia, myso meaning mud and phobia meaning fear.
Atychiphobia (kakorrhaphiophobia, fear of failure, fear of failing, failure phobia).
Theophobia- the irrational fear of a god or deity. Remember its only a phobia if its an "irrational" fear, a normal healthy fear is not a phobia.
There is no medical term or phobia name for the fear of immigrants.However a similar phobia called Xenophobia is the fear of foreigners.
The most common phobia in the world is definitely Arachnophobia. 50% of women and 10% of men have, to some degree, a fear of spiders. If not that then Acrophobia a fear of heights.
We use the term phobophobia to name the fear of fear or of phobias. (The word phobia comes from the Greek for fear.)
Hylephobia is the name of the phobia related to the fear of materialism