I needed to use Google Translate to understand Korean, but even with the language barrier. I think this is a very organized way to present how game servers are written. Thank you for making this available. If you are not Korean, I would only recommend buying this course if you have sufficient knowledge of C++ and general knowledge about how computers work and how sockets work. ( To anyone reading this, I know this is a Korean course. However, I couldn't find anything near this quality in English.)