Submitted a list of gaming qualifications, including a 400 word paragraph about a design issue in League of Legends. Heard back by email after a month or so, then had to do a personality and IQ test in addition to two more design tests. After this, had two phone interviews with some of the lead designers. Then they flew me out to the office, where I had to do 7 or 8 interviews over the course of a day, including both panel and individual interviews. Interviews varied wildly based on the interviewer, from design tests to personality to behavior.