I usually dislike series based around gaming, but this one really manages to express the joy of finding a game you like, without making it look as if the whole world was obsessed with it. It has some tropes used in other similar series that would have 0 sense on an actual game (unique NPCs/ any NPC disappearing after death, MC playing way too much at the start…), but in exchange it fixes many flaws I usually drop this kind of series for (his friends have a life outside, someone obsessed with games wouldn't play just one game at a time, his family exists, programming team actually balancing the game…).
The main story revolves around the MC's free time playing games and the idealised MMORPG that is Shangri-La Frontier. After the IG scene is set, it shows also a bit of his life, just enough to show us he isn't a hikomori, just a teen with lots of free time (leaving things to be introduced without being obvious about them).
One of the main points in which this series differs from others is how they don't idealise elements that are added to make people addicted (Gachas, login bonuses, premium currency …). I guess this is also a sort of critique against other series about gaming that are based on incremental games, or most MMORPGs that are there usually to grab all the cash they can before disappear, being almost identical to one another relying on hype, gratifications and events to keep players …
All in all you can really see how the author / his team like and transmit their enthusiasm for: games with proper endgames, that rely on skills rather than RNG or being incremental. This series really shows how different players exploit games,and how balanced games usually survive for a long time.