Horny Sister-in-Law's Midnight Demand

The publisher declares adult content on Steam. Your mature-content setting is covering the art.
- Developer
- FSK2000X
- Publisher
- LIN YIPENG
- Released
- Aug 16, 2026
- Tags
- RPG
About this game
The developer's description, from the game's Steam store page.
Horny Sister-in-Law's Midnight Demand - An Immersive Visual Interactive Novel.
Core Plot Introduction Wyatt drives his girlfriend Olivia back to his home in Avery Town on a summer night. His brother Owen is sick and his sister-in-law Isabella takes care of him. The family hints to Wyatt to help his sister-in-law continue the family line. Wyatt and Isabella get involved in a forbidden relationship. After Isabella gets pregnant, the truth is exposed and his brother Owen starts to take revenge.

Worldview Atmosphere The story revolves around the Harper family. The summer night in the town is sweltering, and the old wooden house is filled with an atmosphere of repression and desire. The internal family contradictions and ethical conflicts gradually intensify in this atmosphere, full of tension and excitement.
Highlights of Female Character Interactions Isabella is bold and proactive. Her interactions with Wyatt are full of passion and temptation. Her words and actions stir Wyatt's nerves, making their relationship heat up quickly.
Tension in Character Relationships Wyatt's forbidden love with his sister-in-law Isabella, his guilty feelings towards his girlfriend Olivia, and his brother Owen's hatred make the relationships between the characters complex and full of tension.
Scene Features From the dim toilet, kitchen, study, and storage room to the basement storage, different scenes add diverse atmospheres and a sense of excitement to the story.

Immersive Experience Players seem to be in the story, feeling Wyatt's entanglement, Isabella's desire, and Owen's anger. As the plot develops, their emotions are deeply affected.
High-definition Visual Performance The game presents in high-definition pictures, vividly showing the characters' expressions, actions, and scene details, making players feel like they are on the scene.

Functional Gameplay Features It supports offline play, allowing players to play at any time; it has a one-key backtracking function, which is convenient for reviewing the plot; automatic playback makes reading smoother; chapter browsing can quickly locate; there are also high-definition CGs to show the wonderful moments, bringing a smooth reading experience.
System requirements
As Steam lists them.
Windows
Minimum
- Requires a 64-bit processor and operating system
- OS
- WIN7 SP1/WIN8/WIN10
- Memory
- 8 GB RAM
- DirectX
- Version 9.0
- Storage
- 3 GB available space
Recommended
- Requires a 64-bit processor and operating system
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