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”.

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Why did the game Doki Doki Literature Club affect me? It made me sad and worried for like, maybe 3 days. Luckily I felt much better after 4 days. But I'm still

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Father believes death of his son, 15, is linked to Doki Doki Literature Club

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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

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

Class of '09: The Re-Up on Steam

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

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