Death Games?

Hi, I'm looking for GOOD DRAMAS (no movies) with death games in them. Something like Alice in Borderland where they have to participate in challenging games to survive. Preferably types of puzzles where they have to think and the answers aren't obvious. They can be gory or mature, that's alright with me. Also, any country is fine. Thank you!!!

If you’re set on a drama then the Japanese version of Liar Game is really fun/what you’re looking for.

If you’re open to non-fiction too, TVN’s The Genius is actually my favorite high stakes (well, not life or death but elimination) survival game that’s like a real adaptation of Liar Game. It’s amazing because what’s happening is actually, well, real, and the contestants really inspire you with their intelligence or drive you crazy with their cruelty. Each season is slightly different in regards to how far the contestants are willing to go/spite or ignore each other (S1 is my fav but by far the least ‘cruel’, S2 even had a controversy bc it was so cruel, S3 & 4 are monopolized by a single alliance so pretty cruel by definition) so I’m pretty sure you’d find one you like. 

• White Christmas - awesome drama
• Battle Royale - this is one of Quintin Tarantino's fave movie.  
• Death Bell
• Ousama Game - haven't seen this yet, and the rating is quite low, so I dont know if you can classify this as Good
• Close Your Eyes Before It's Dark - maybe

not a death game, but someone like detective games where the teacher hostages his students to get to the mystery of the death of one student: 3 Nen A Gumi: Ima kara Mina-san wa, Hitojichi Desu. Highly recommend this one