Doki Doki Literature Club is a free-to-play anime-style psychological horror game presented as a romance visual novel, which was released for Windows and Mac systems by the game development studio Team Salvato in late September 2017. The game also inspired internet memes and achieved a large following online.
In the game, the player is invited by their childhood friend Sayori to join a literature club at school. There, he meets Yuri, Natsuki, and Monika, the club president. All the girls seem to express some romantic interest in the player-character. By "creating poems," a mechanic in which players select words that either resonate more with either Sayori, Yuki, or Natsuki, leading the player down their "route." Monika does not have a route.
A modding community has surfaced emerged around the game, as demand for different, happier versions of the game arose. On September 26th, 2017, work began on a mod called Monika After Story started by Backdash, which changes a late scene in the game such that the player can simply spend a lot of time with the character Monika and have conversations that the original game's ending doesn't allow.