I applied and about a week or so went by when I got a e-mail stating that they are starting to schedule phone interviews and they were interested in talking to me. A week after that I spoke with the Hiring manager and the phone interview went fine. He stated that he had tons of these phone interviews to go through and let me know what the possible following scenarios could be. I waited about another 2 weeks and finally was asked to come for an inperson interview. The Blizzard campus is beautiful and very relaxed. When I arrived I checked in with the receptionist and waited for my recruiter. My recruiter meet with me and took me to the conference room where I would be interviewing. On the initial interview e-mail, it stated that I would be meeting with 3 people. When I arrived in the room there was a total of 5 engineers. They all fired off questions for about a hour and a half or so before the interview came to a end. I was walked out by the hiring manager and we had a good chat on the way back to the reception area. I waited another 4 weeks before I received the finial e-mail letting me know that I was not selected. The process was super long and the pannel interview was pretty intimidating. I had a great recruiter and good luck to you other system administrators.

A few phone interviews and then an on-site all day interview. If you're not local they'll fly you out and put you in a hotel which is great. The onsite was all day so be prepared to be hammered with questions from several teams.