I thought it would be interesting from start to end but nah I was wrong.
I thought it would be very new and different from other k-thriller dramas but nah I was wrong again. It is actually a clever idea to combine two phenomenal movies' ideas into 1 drama, and the idea of using childhood games as the main focus here is insane. I never thought child's games could be this dangerous. Set aside the clever idea, I personally hate the "blood" they're using, it looks too fake.
To be honest...
I really loved the overall drama...at first, but I lost bit by bit of my interest after the 1st half of the total episodes. As the episodes went on, this drama felt ordinary and bland. I became numb seeing their fighting and killing scenes, it happened too often and became boring (not to mention the ridiculous blood they're using, too watery!). I expect this drama to be different but it turns out as one of Netflix's typical k-crime action thriller drama with a hanging ending and lots of untold truth. Maybe there'd be S2? that'd be good, I'm not that interested tho.
Conclusion: that's okay, just give it a go, it's exciting.
Last but not least, WI HA JOON I LOVE YOU TO THE MOON AND BACK!