Alone With my StepSister [Demo]
WARNING
Every explicit scene is completely consenting, and all characters are at least eighteen years old.
ABOUT THE GAME
Every room in your lonely house becomes a playground for taunting, chores, and more daring activities in the 18+ sandbox visual novel Alone With My Step-Sister.
You and your razor-tongued, 21-year-old step-sister are left to “keep things tidy” while your parents are away for two weeks. Between late-night movies and breakfast preparations, the tension rises from playful shoves to bedroom invitations, all of which are fueled by a single Lewd Level that keeps track of how brazen she is willing to get.
Learn to navigate the morning, afternoon, evening, and nighttime sandbox loop and make decisions about where to go and what to do.
- Money and Chores : Fix the Wi-Fi, fold laundry, do the dishes, and get money for presents.
- Unexpected Occurrences : React or peek and take the consequences if you see her stretching, taking a shower, or dozing on the couch.
- Risk-Reward Decisions : Play it easy and her Lewd Level climbs from 0 (hands off) to 5 (everything goes); push too hard and trust declines.
- Quests for Level-Up : Each of the four milestone scenes—the bedroom phone confession, the movie-night lap ride, the wine-fueled dares, and the cook-together mishap—unlocks new behaviors and postures.
- Unrestricted H-Scenes : Choose from ten distinct positions (cowgirl, standing shower, spooning, missionary, etc.) and spectacular endings for each chance meeting after she reaches level five.
- Gallery & Accomplishments : replay every CG, listen to every moan, and hunt Steam achievements for perfection.
Every visit is unique thanks to quick banter, branching reactions, and a dynamic suspicion meter: keep silent or risk a “how’s it going?Mom’s call that prevents you from having fun for a day.
Can you manage household duties, prevent the house from collapsing, and yet persuade your step-sister to go on the most outrageous trip of her life? Only the neighbors’ ears are off-limits, so find out when the parents are leaving.
FETISHES
- 2D
- Adult
- Erotic
- Hentai
- Romance
- Sandbox
- Single Player
- NSFW
GAME SCREENSHOTS
Frequently Asked Questions
What is the Alone With my StepSister [Demo]?
Alone With my StepSister [Demo] is a visual novel game for adults.
Who developed the Alone With my StepSister [Demo]?
Alone With my StepSister [Demo] was developed by Naughty Narratives.
When was the initial release of the Alone With my StepSister [Demo]?
Alone With my StepSister [Demo] was released February 13,2026