I highly recommend this drama for those who like crime thrillers. One of the things that I like about this drama is that the villains have back story, it simply shows that 'no man is born evil,' everyone has a reason for behaving like that or like this, that understanding others is significant human behavior.
This drama will make you realize the importance of time, it is not important how you'll die, but how you will live while you have time. The power of media, and how they abuse their power. There's a lot of moral lessons in this story, you just have to dig deeper. Some may say that it is just the same plot with other Korean dramas, but it is not, they have different points that want to prove.
When it comes to the title, I think it should just be, The Game towards Zero, and no colon punctuation needed. In the last two episodes, you'll know why 'towards zero' is on the title.
Besides Ok Taecyeon (Kim Tae-Pyung) and Lee Yeon-hee (Seo Joon-Young) who both portrayed their characters well, I really like the character of Lim Ju-hwan (Gu Do-kyung), I felt really sad for his character, I just think that his character somehow deserves to be shown in the last episode having a "life," but later on, I realize that it should end like that, and I'm happy with the ending. Must watch!