This is my first time writing a review. So this is based on my opinion.

The story was well-written, the acting was well-done. I can feel their feelings of hopelessness. At first I tought the men in black are the one responsible for the deadly game. before I knew who the "Admin" was, I make a lot of wild assumptions. I didn't expect that the students who were being bullied already died. I was thinking that he is probably the "Admin". At the end, I was surprised that the teacher was added to group. It is sad that only four out of 22 student that survive until the end. I didn't expect that the "Admin" was an Artificial Intelligence (AI) . It's crazy that the AI can kill a real person. BTW I'm still confused on how the "Admin" or the AI was able to kill them. I know that they will be killed if they don't follow the rules of the game. But they won't be killed as long as they were away from their phone. So, is the phone a murder weapon? And about the four "target" why are the bullies not included to the "target". The student wasted their friends because they thought the bullies are the target. Well, for me, this drama is worth watching. And I hope there will be more dramas like this.

Watching this Drama reminded me to Korean dramas such as Squid Game, Night Has Come, All Of Us Are Dead, and Duty After School. I really like survival type dramas.