 If you liked
Oukoku Game
|
 ...then you might like
Utsuro no Hako to Zero no Maria
|
Similarities:
+ Involve high schoolers in a survival game using medieval ranks like King, etc.
+ Both have yanderes, people who don't want to kill others, and similar protagonists caught in the middle of everything
Differences:
- Hakomari is a light novel series and has other stories than just the survival game one (though the others do still have a similar feeling to Oukoku Game)
- There's no girl in Oukoku Game quite like Maria, the female lead in Hakomari