Alright, first up I'm not the person to normally write reviews, but seeing the reviews for this title I thought a few people might want to read a review from a different standpoint. In my opinion this manga is mediocre at best and awful at worst, let's get into why that is.

1. Characters: As most of you should know, characters are normally not the strong point of survival games, therefore I will not waste too much time here. The protagonist a very basic shounen protagonist, nothing too special and kind of boring. Some side characters are written decently, but nobody stands out a really well developed character. What really annoyes me though are the female characters. Most of them start out alright, but after eventually falling for the protagonist they feel bland and their character gets reduced to “in love with main character“. It feels very cheap and honestly is kind of insulting, I can't remember the last time I've read worse female characters.

2. The story: Very basic story, some plotpoints get dropped or feel rushed at times, but not much worse than other storys from this genre, nothing dpecial but alright.

3. The art: Basically the same as the story, the art is pretty average and nothing too amazing but definetly not the weak part of this manga.

4. The games: Alright, let's get to this mangas biggest weakness compared to others of the genre, it's games. Sadly, most of the games were very bland and boring, with the ecxeption of exactly two games. Especially the two longest games felt very, very bad to read through. Imagine a game taking up close to if not more than three volumes, draging on and on, and after it is finished and done and we know who survives after all of it a supernatural being comes down and just sorts out the contestants even more in about a chapter. It really feels like the author didn't want to deal with too many characters and just sorted through them after the main game was done to have it easier in the next game. And this actually happens twice. It doesn't really help the suspense if you know that a being more powerful than god could just come up to the winners of a game, say lol no and pick the main characters. But that is just lazy writting. It also feels like a lot of the time the author just set up a game that he thought was cool but had no idea where to go with it. And that often shows.
TL;DR: Most games are boring or too long and the payoff is done badly.

Overall I had fun reading this manga, but mostly in a so bad it's good way. If you can enjoy stuff in this vein I would recommend it, other than that I wouldn't recommend it to anyone.