The interview process was extremely smooth. I've interviewed with Unity a few times in the past and their quality has been really consistent all across different teams.
They ensure that the questions between panels don't overlap and the interviewers made sure that they read the notes from previous meetings as their questions tie in well with answers I have given prior. Something you don't see often! You get to see a lot of different personalities throught the process and it shows that they're passionate about their craft.
As a recruiter myself, I was grately impressed by the execution, the timely feedback, and the professionalism :)