Phone screen with recruiter, two phone interviews with developers and leads, on-site interview that consisted of 4 separate interviews with people across the department (product, dev, test, leadership) and lastly a final phone interview with QA Director.

6 interviews! The first couple are by phone, the final one is a day of interviews infront of multiple panels. Make sure you study the game itself, as they do tend to hire people who actively play their game. No easy feat, they have over 100 characters!