Sans Undertale
This surprisingly strange game is either deservedly idolized, or just as deservedly criticized. But it is in its own way a unique, kind, sentimental tale for both adults and children. And at the same time, a good fairy tale can become a mystical thriller about a maniac killer.
In the introductory video, the player is told that once monsters and people lived side by side, in peace and harmony, but at some point, due to a rather strange event, a war broke out between people and monsters. As a result of which, people sealed the monsters deep underground with the help of a magical barrier.