This manga will break you. Multiple times.
The MC and his friends are transported to the Borderlands. You must win games to prolong your visa. If the visa is over, you die. The four types of games are physical, logical, teamwork, and psychological (psychological games are the most brutal).
MC plans a Christmas vacation with his crush to confess his feelings. When they get to the hotel, his crush is separated into 12 clones. MC has to find out who is real and who is fake. The one accused is killed.
A girl wakes up in a place where the masked battle the maskless. The style and mask designs really put this manga apart from others. In addition, the main character is a badass woman.
A daruma appears in the MC's classroom, and forces the classmates to face each other in deadly children's games.
This has the same premise as the first one, but with a different cast.
I love this manga. Students must escape a sinking ship, while battling monsters and...other students.
Much like Sword Art Online, but better, social media users are sucked into the virtual world with no way out. They must play games to survive. Ends on a cliffhanger, but there's a sequel!
Part two of Real Account, a manga where social media users are sucked into the virtual world. They must complete games to survive.
If you win, you receive one hundred million yen! If you lose, you go to hell!
Orphans live in a haunted dormitory, and must fight supernatural forces and occasionally each other the stay alive.
Imawa No Kuni No Alice