By: Arcus Plume
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The daring explorer Serena and the kindhearted succubus Nerisha meet by chance in the depths of the Underground. Succubus Research Diary is an adult visual novel about the unusual and very intimate relationship between the two women.
Linux · Sep 6, 2021
Worldwide · Exact date · Full release · IGDB
PC (Microsoft Windows) · Sep 6, 2021
Worldwide · Exact date · Full release · IGDB
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25 achievements available.

Discussed *everything* of scientific importance.
LockedSteam

Not quite yet halfway there.
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The nth day
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Reached one of the endings.
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Seen all endings.
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Played one of the epilogues.
LockedSteam

Seen all epilogues.
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There are many things one can do for the first time.
LockedSteam

Maxed out certain two bedroom activities.
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Maxed out certain three bedroom activities.
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Total mana drained: 25 units
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Total mana drained: 50 units
LockedSteam

Reached Star level in every bedroom activity.
LockedSteam

Opposite of Yes. Did the unthinkable and declined Serena's invitation every "morning."
LockedSteam

Only true cowgirls can achieve this.
LockedSteam

Discussed matters of scientific importance 9 times.
LockedSteam

Showed Jenny a good time.
LockedSteam

Entertainment at its best.
LockedSteam

Not quite the same as Serena's Services.
LockedSteam

LockedSteam

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Can't wait for tomorrow...
LockedSteam

Just what kind of trial is that?
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... the beginning of another?
LockedSteam

Accepted Serena's invitation every "morning."
LockedSteam
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