My personal opinion?
No it would not be wrong.
Still I would be surprised if a priest were interested in such things. I can easily picture a priest playing pac man or other short games as a way of interacting with the youth in his ministry.
Playing WoW however is a long-term commitment.
people either play it regularly or don’t bother.
I’ve heard of a priest who enjoyed watching “Murder She Wrote.” It is said he unfailingly devoted two hours a week to doing so.
I suppose, in theory that same priest could have spent two hours a week playing WoW, but of the WoW players I know, none of them spend only two hours a week playing.