Through Instructor RonnieJ’s ‘Game Engine Framework with C++’ course, I was able to build a very solid foundation in game engine development. While studying development, I had encountered various concepts related to game engines and CS, but I found it difficult to explain them accurately or organize them systematically. Through this class, I was able to clearly understand concepts that were previously confusing and organize them to the point where I can explain them myself. Beyond just understanding the overall flow of how an engine is structured and operates, I was able to learn the actual operating principles by directly implementing core concepts such as the game loop, actor and level-based world management, fixed-frame update structures, input processing systems, double-buffered rendering, and AABB collision detection. Designing the engine/content structure through DLL separation and implementing a custom type system (RTTI) was also very helpful. After completing this course, I am now learning Unreal Engine, and I naturally understood things like the DLL keywords and casting used in Unreal headers. Additionally, in an era overflowing with flashy graphics, I was satisfied to be able to create my own unique game by implementing a console-based game. The course structure was also very helpful for learning. By following the class materials provided for each lecture, the summaries at the bottom of the videos, and the checkpoints, I was able to review efficiently without missing important concepts. I believe this is not just a class where you simply make a game, but a lecture that allows you to understand the core structure of a game engine and elevate your mindset as a developer to the next level. For those who want to start game engine development or those studying development, this is a truly precious, unicorn-like lecture!!! I strongly recommend it to those who want to properly understand game engines and to developers who want to grow one step further!!