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Humanity Must Perish

TitleHumanity Must Perish
LengthVery short (< 2 hours)
DeveloperZetsubou Games
PublishersZetsubou Games


As an android whose sole purpose is to save planet Earth from destruction at the hands of mankind, Kyuu minces no words as she announces her plans to extinguish the human race.

For the sake of preserving planet Earth, humanity must perish. Failing that, mankind must be enslaved. Those are the only two options, and if Kyuu has her way, the former will soon become a reality.

Before she can do so, however, her creator makes a proposition: Kyuu will spend one day among regular, everyday human beings, judging for herself whether they are capable of meaningful change or not.

Kyuu accepts this proposition, and thus sets out into the world for the first time, coming face to face with a variety of odd individuals as she decides the fate of mankind.

Will Kyuu's colorful encounters show her the good in human society? Or will the bizarre antics of those who she meets reaffirm her belief that mankind must be destroyed?

Whatever her decision may be, the impressions Kyuu leaves on those she meets won't soon be forgotten. She is a harsh critic, and for a race as flawed as mankind, her observations and misunderstandings will be boundless.

[From official website]

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PersonalityAntisocial, Misanthrope
RolePyrokinetic, Robot
Engages inMass Murder


Kyuu is an android who possesses world-class hardware and cutting-edge software. Despite her sophisticated AI and frightening processing power, however, Kyuu lacks the social skills necessary to fully understand others. Her words and actions seem nonsensical to everyday human beings, and in return, Kyuu often fails to grasp the illogical actions and meaningless words of the peculiar race known as mankind.

[From Official Website]

Main character

The Professor
HairBalding, Beard, Grey
PersonalityAltruistic, Optimist


The Professor is an old man who has dedicated his life to the study of robotics. Although he appears to be an anti-social scientist who favors machines over humans, he is actually an altruist who believes that robots may one day save humanity. To that end, The Professor spends his days cooped up in his lab, isolated from the rest of the human race, working on and happily conversing with his creations.

[From Official Website]