It is the first Korean TV series I watched. I found it very interesting, with fast action. It also gives you food for thought. Unlike series of similar cases, it has the main difference that the players are there voluntarily. This creates different dynamics and plot. Watching the first 6 episodes I was excited. From the 7th episode until the end, there was no surprise and everything was predictable.
The explanation of why all this happened,was just what was expected. The story with the policeman and his brother, did not finally seem to have special meaning. The "plot twist" with the old man, was not a plot twist at all, if you have watched "Saw' 1 & 2 and many of the thrillers that followed it. Perfect up to a point, but without a climax. This could have been a 10 but..
The explanation of why all this happened,was just what was expected. The story with the policeman and his brother, did not finally seem to have special meaning. The "plot twist" with the old man, was not a plot twist at all, if you have watched "Saw' 1 & 2 and many of the thrillers that followed it. Perfect up to a point, but without a climax. This could have been a 10 but..