1. Some inconsistencies: Idk whether this one is from the translation site or that the author really forgot the details. For example, in the 3rd game, it was firstly said there were 8 people. But then the people who came out were just 7. So which one is the right number? Also, some little information like someone stood 2 metres away but in the next passage it was written 3 metres. Since when did they move?
2. Although the games were ended with plot twist, in my honest opinion, the plot twists used in this story are the kind of plot twists that have been used many times in other novels or animes or dramas, making it not quite a surprise anymore. Like when the end of the game was revealed, I was just like, "Oh, so this is how it works." with a deadpanned facial expression.
3. Maybe, this one is just from my point of view, but the explanation in each game is too much that it makes me lazy to read it through, and just jump up to the actions. The worse thing is, the explanations were mentioned over and over again in the following chapter, as if the author was afraid the readers would forget the build up of the story, but it makes the story kinda boring in turn.
   
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The game instances were unique and were based on fairytale characters but with a twisted personality and had dangerous consequences.

Tang Mo and Fu Wenduo were both smart and mature. What I like about Tang Mo was his intelligence, independence and his OPness. Same goes with Fu Wenduo. He knows what he wants and had defined his feelings for Tang Mo early on. During dangerous times, we can see him protect Tang Mo and their cooperation was done so fluidly it seemed that they can read each other's minds. But it actually boils down to the deep understanding they had of each other.

The extra chapters provided us with a glimpse of an AU where the Black Tower never existed. We see the characters live their lives and the main leads finally meet each other in person. For me it was like instant love (but of course they've known each other for years online) which I didn't mind. Like minded people probably get together with just a look, a gesture and the feeling that they have for the other. I specially liked the scene the morning after when they were both in Tang Mo's apartment in Suzhou... it was just very domestic and sweet that we didn't see in the main story.

A couple of chapters were also dedicated for an epilogue in the original timeline. The leads went to Suzhou and Fu Wenduo helped Tang Mo clean his apartment. Mr. Fu proposed on living in Suzhou instead of Beijing. This shows that they were ready to live together, facing the new future of the world.