It was a phone screen that lasted about 30 minutes. I was interviewed by two of the team leads. There were a lot of technical questions about their game's mechanics to see how familiar I was. Prior to the interview, I had to submit a screenshot of my progress in their game and answer some questions about my interest in video games. These questions were repeated during the phone screen. Throughout the interview, they were quite "clinical" and not very warm. I could tell the interviewers were very serious about what this job can be and were possibly tired of interviewing people. Be upbeat, but stay focused on their questions. Be specific as possible. They didn't seem responsive to humor at all. Two things that stood out as important to them was finding someone with a good personality fit and someone that is inherently competitive. If brought on, I don't believe there will be much hand-holding, so you have to be prepared to get up to speed on your own.