For someone who just wants to hear the core concepts for getting started and dive into Unity development, I can recommend it. In my case, I'm a current web app developer and had some experience taking GoldXTal's lectures on XTtube as a hobby (within 10 hours). There are lectures I want to take, such as Rookiss's Lineage-like development lecture, but those lectures are too expensive. So, I took the introductory lecture, hoping to experience Rookiss's lecture thanks to this discount. The content isn't much different from what I heard for free on XTtube. Even with the 20% discount, I feel it's too expensive. If a few more necessary things for Unity development were added, I think it might be worth the price tag of over 40,000 won. Or, based on the content included in this lecture, such as coroutines, it would have been better if there were practical skills like "this is how it's often used in real-world development." I can't say it wasn't helpful at all, so I'll give it 3 stars. ※ I'll also go and listen to the Vampiric Survivor-like game lecture. → I'm currently listening to the Vampiric Survivor-like lecture, and while the price difference is a bit over double, the density of the content itself is very different. Even for a Unity beginner like me, I think it will be very helpful for game development in general, including how to structure source code efficiently.