I would not believe that this was possible if the same thing didn't happen to me. Also about World of Warcraft. Just once.
The next day I got bored killing creatures on some side quest, a thought came through my mind ("what am I doing with my life?"), and I've never looked back.
That's when I realized that dreams are a mechanism the brain uses to train itself in a best-effort simulation of recent new challenges. Probably for committing new learnings from conscious understanding roughly analogous to symbolic AI to subconscious pattern matching more similar to ML. Months after I remembered those minesweeper dreams, I was able to multitask any though process that did not involve eyes and hands parallel to the game, in fact I solved my fastest boards when my conscious mind was completely distracted from the game. (and it was an addiction, and I've grown or of it)
Evolution doesn't tend to waste things. As long as some processing is happening, it might as well be put to good use.
I would wake up early in the morning, play the game until someone mentioned I should eat, I would eat, then continue playing, until someone mentioned I should eat, I'd continue playing until late at night, go to sleep and continue.
I was extremely addicted and attached to the game. I dreamt about it, I thought about it, fantasized about it.
1 year passed, I started 8th grade and all of a sudden WoW and other computer games were extremely boring. I could play them for about 30 minutes and would just get fed up with any game.
I was like that for years, and just recently I started Super Meat Boy and it had the same addictive fulfilling qualities that I felt when I was a kid, and I could spend hours on it. I completed the game, switched to playing others, but still couldn't get addicted to anything.
I rarely play games now. Max 8 hours total playtime per year.