It was tough. I wanted a lecture that organized the modularized knowledge in game production in one breath. When I saw the finished product following the lecture, I felt like it was not worth the money. The script for the lecture itself had many errors, so I personally studied more than the lecture time because I was fixing it. What was especially unpleasant was that there were many unnecessary gaps in the middle of the video, and the timeline was not properly managed, so it was easy for unexpected errors to occur. I don't know because I haven't taken the instructor's other lectures, but I recommend not watching this lecture.