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Hentai Step Sister
Hentai Step Sister is an anime game about a mysterious girl who unexpectedly begins living under the same roof as the main character.

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Features
Single-player
Steam Achievements
Steam Cloud
Family Sharing
Steam is learning about this game 
Languages:
Interface Full Audio Subtitles
English ✔ ✔
French ✔ ✔
Italian ✔ ✔
German ✔ ✔
Spanish - Spain ✔ ✔
Arabic ✔ ✔
Bulgarian ✔ ✔
Vietnamese ✔ ✔
Greek ✔ ✔
Danish ✔ ✔
Simplified Chinese ✔ ✔
Traditional Chinese ✔ ✔
Korean ✔ ✔
Malay ✔ ✔
Norwegian ✔ ✔
Dutch ✔ ✔
Polish ✔ ✔
Portuguese - Brazil ✔ ✔
Portuguese - Portugal ✔ ✔
Russian ✔ ✔
Romanian ✔ ✔
Thai ✔ ✔
Turkish ✔ ✔
Hungarian ✔ ✔
Ukrainian ✔ ✔
Finnish ✔ ✔
Czech ✔ ✔
Swedish ✔ ✔
Japanese ✔ ✔
Indonesian ✔ ✔
Spanish - Latin America ✔ ✔
Azerbaijani ✔
Albanian ✔
Amharic ✔
Assamese ✔
Afrikaans ✔
Basque ✔
Bangla ✔
Bosnian ✔
Belarusian ✔
Valencian ✔
Welsh ✔
Wolof ✔
Armenian ✔
Galician ✔
Georgian ✔
Gujarati ✔
Hindi ✔
Dari ✔
Estonian ✔
Zulu ✔
Yoruba ✔
Kazakh ✔
Kannada ✔
Catalan ✔
Quechua ✔
Kyrgyz ✔
Konkani ✔
Khmer ✔
Xhosa ✔
K'iche' ✔
Latvian ✔
Lithuanian ✔
Luxembourgish ✔
Macedonian ✔
Malayalam ✔
Maltese ✔
Maori ✔
Marathi ✔
Mongolian ✔
Nepali ✔
Odia ✔
Punjabi (Shahmukhi) ✔
Punjabi (Gurmukhi) ✔
Persian ✔
Kinyarwanda ✔
Serbian ✔
Sotho ✔
Sinhala ✔
Sindhi ✔
Scots ✔
Slovak ✔
Slovenian ✔
Sorani ✔
Swahili ✔
Tajik ✔
Tamil ✔
Tatar ✔
Telugu ✔
Tigrinya ✔
Tswana ✔
Turkmen ✔
Uzbek ✔
Uyghur ✔
Urdu ✔
Filipino ✔
Hausa ✔
Croatian ✔
Cherokee ✔
Hebrew ✔
Irish ✔
Icelandic ✔
Igbo ✔
See all 103 supported languages
Check out the entire Cyber Keks Studio collection on Steam
This game is not yet available on Steam

Planned Release Date: Sep 10, 2026

This game plans to unlock in approximately 5 weeks

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Mature Content Description

The developers describe the content like this:

This game is for adults only. It contains adult content including frequent nudity and explicit sexual scenes/scenarios.
A large section of the gallery contains images of nudity, including visible panties, bare legs, buttocks, breasts, vaginas, and cocks. The game includes:
- Depictions of sexual acts including oral, vaginal, and anal sex.
- Fully nude characters with visible genitalia.
- All characters are depicted as adults aged 18 or older.

About This Game

Hentai Step Sister is an anime game about a mysterious girl who unexpectedly begins living under the same roof as the main character. Behind her reserved behavior and calm smile lies a bright personality, a love of jokes, and a habit of constantly testing the player’s attention. Complete every level to get to know the heroine better and unlock the full collection of themed illustrations.

With each new level, you will unlock new scenes and outfits featuring the heroine. Watch her mood, style, and surroundings change—from ordinary moments at home to colorful themed costumes. Complete challenges, solve puzzles, and gradually unlock the entire gallery of anime illustrations.

🔹 Game Features:

Two stages in each level: First, a memory game in which you must find matching pairs. Then, a puzzle featuring a new illustration, which becomes available after completing the first stage.

Unlock new illustrations: Each completed level unlocks a new look for the heroine and brings you closer to completing the full collection.

Plenty of content: 24 memory-game levels and 24 puzzles—a total of 48 engaging stages featuring colorful anime illustrations.

Additional features: Achievements for completing the game. A gallery where you can view all unlocked illustrations. Three difficulty levels: easy, normal, and hard—choose the mode that suits you and complete the game at your own pace.

Hentai Step Sister combines a classic memory game, puzzles, and collectible anime illustrations. Can you complete all 48 stages and fully unlock the gallery?

AI Generated Content Disclosure

The developers describe how their game uses AI Generated Content like this:

Most illustrations are generated with AI and refined by our artist’s hand.

System Requirements

    Minimum:
    • Requires a 64-bit processor and operating system
    • OS: Windows 11
    • Processor: 2 GHz
    • Memory: 4 GB RAM
    • Graphics: 2 GB GeForce or AMD
    • DirectX: Version 10
    • Storage: 500 MB available space
    Recommended:
    • Requires a 64-bit processor and operating system
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