What is Doki Doki Literature Club, the 'dark' game linked to a teenager's death?

Police have issued a warning to parents about a computer game that poses “a risk to children and young people, especially those that are emotionally vulnerable”.

Give me opponents for the self aware AI who became obsessed with the player, Monika (Doki Doki Literature Club) : r/DeathBattleMatchups

Warning over dark video game 'linked to boy's death

Doki Doki Literature Club Plus! — EYEZ N TEEF

Doki Doki Literature Club! POP UP PARADE Monika - YoshiYoshi

Doki Doki Literature Club Has Gaming's Most Terrifying Villain

U.K. authorities issue warning about anime-style video game Doki Doki Literature Club after death

Inside twisted Doki Doki Literature Club game which parents say caused 'suicide' of their children – and it's horrifyingly easy to get hold of

Literature Club Battle Royale, DBX Fanon Wikia

Which one of the girls suffers most in the game? (Pacifically on opinions) : r/DDLC

The Meaning of Death in Fiction. We live in a word where people care…, by Vargas Salvatierra

Doki Doki Literature Club Review

Monika, Villain School RP Wiki

Doki Doki Literature Club! Developers Talk About The Horror Of Losing Control - Siliconera

Doki Doki Literature Club! / Characters - TV Tropes