The concept of the drama is nothing new, but the team did a great job in executing this drama to almost a perfection. Even though some parts of the drama was somewhat predictable there were some great twists and turns too. There were games to play and mysteries to uncover. And there was also the heartwarming or heartbreaking backstories and interactions to balance the whole thing. What is one willing to do survive? How much is one willing to change in times of crisis? And who or what were controlling things behind the scenes? The story progressed very smoothly with no dragging and flashbacks to slow it down.
The atmosphere created in the drama along with the somewhat childish but eerie music was a huge part of the drama. The attention to details was a pretty good touch from the production team. The casts were very good and did an amazing job in my opinion.
Overall it was very refreshing and fun to watch. If you don't mind some gores and deaths in drama then it is one of the best dramas of the year for sure.