I had a first stage with a recruiter, it was a first contant stage to see if I was a good fit. Then, a second stage with some of the Leads, a bit of a background check and background questions. A third stage with some of the teamates that I would work with, mainly questions about pure c++ and Unreal Engine. Also math questions related to trigonometry and projections to lines of points and stuff. To be honest they ask questions you can know about when you fisnish the interview and review, which I think is useless, since you can have a bad day or simply don't remember the concepts. So pretty bad hiring process, to be honest, full of questions that don't realte to they daily job... Did not accept the offer since we could not get to an agreement for the payment.