Succubus Nightmare

The publisher declares adult content on Steam. Your mature-content setting is covering the art.

Developer: LUNA GameArt
Publisher: Mango Party
Released: Sep 11, 2026
Steam reviews: 84% of players recommend it, from 176 reviews — Steam calls that “Very Positive”
Tags: AdventureRPG

View on Steam

On Linux, Steam Deck and Steam Machine

Steam Machine: VerifiedSteamOS Compatible

Valve rates it Unsupported on Steam Deck. Valve rates it Verified on Steam Machine. Valve marks it SteamOS Compatible.

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Where to buy

Steam

Buy on Steam

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What owning this involves

Cloud saves · The store backs this game's saves up. That cover ends if your account does.From the store listing

Only what the store discloses. Nothing listed here means the store disclosed nothing — not that there is nothing to disclose.

Features

Single-player
Steam Achievements
DualShock Controller Support
DualSense Controller Support
Partial Controller Support
Steam Cloud
Family Sharing

From the game's Steam store page.

Languages

Traditional Chinese
English · full audio
Japanese · full audio
Korean
Simplified Chinese

Steam lists 5 languages, 2 with full audio.

Age rating & content

DEJUS 18 · Nudez Violência Temas sensíveisThe rating board's own rating, as Steam relays it
IGRS BANNED · Penampilan Tokoh Horor KekerasanThe rating board's own rating, as Steam relays it
Some Nudity or Sexual Content · Adult Only Sexual Content · Frequent Nudity or Sexual Content · General Mature ContentSteam's content descriptors, as the developer answered them
All characters that appear in this game are adults. This game contains content that some players may find uncomfortable: Violence, Sex Acts, Non-Consensual Sex, Sexual Assault, Death, Gang Rape, Sex while Pregnant, Inflation/Belly Protrusion, Interspecies Sex, Bondage, Futanari, Tentacles, Exhibitionism, Use of Sex Toys, BDSM, Voyeurism, MonsterGirl Please play in an appropriate environment and be considerate of those around you. All content in this game is fictional and intended for adult audiences only. This game does not endorse or encourage non-consensual acts or sexual violence. Please comply with all applicable laws and social standards.The developer's note on the content, from Steam

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About this game

The developer's description, from the game's Steam store page.

Succubus Nightmare is a 3D erotic puzzle game. Play as Charlotte, the older of two stepsisters, as she leads her sister out of a sprawling manor controlled by a succubus. As the story unfolds, the truth behind the mystery slowly unravels—but is someone else really the mastermind behind all this?!