The filming and pace is okay, but most characters are inconsequential and lackluster. There's no real meaningful character development in this series. Many promising characters starting out, but most ended up being just plot devices to get the story moving. Virtually nothing will change if you swap some of the main characters out.
Games are also extremely bland compared to similar pieces like Liar game or Alice in Borderland. Considering there are (without giving spoilers) quite a few a games and they take up significant amount of the screen time, the fact that there are almost no clever design to these games and how they play out is very disappointing.
It is an okay series as pastime. However if you compare it to any serious predecessor in the genre, this one is quite pale in comparison especially at its core.