A trope I’ve seen quite commonly in manga is that of the ‘death game’. Usually, a group of students wakes up in some closed-off area, with mysterious instructions to either kill each other, perform acts that might end in death, vote people to die, etc.
I’d love to see an analysis of why this genre is so prolific. Perhaps a look at the themes it deals with, and how despite the large number of manga, there are still so many unique ideas.
Possible example to look at could be: Ousama Game, Jinrou Game, Tomogui Kyoushitsu, Doubt, etc.