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Your StepSister

Your StepSister

Add your lovely stepsister on your desktop. Make sure she is not stuck anywhere!

Released May 9, 2025 Developer StepBrother Publisher StepBrother, GosDev Production Platforms Windows AnimeCasualFemale Protagonist2DCute
View on Steam ↗ $0.99 (US · as of 2026-05-15)

What players say

Steam review score and the most-helpful voices, which may include critical ones. Score via Steam as of 2026-09-26.

77.6%positive143 reviews
Recommended · 3 found this helpful

“simulator operating firmly within the well-established tropes of modern erotic interactive fiction. Designed primarily for a niche audience interested in personal dynamic simulations, taboo household drama, and choice-driven romance arcs, the game provides a structured narrative…”

— a player, Steam review · 37 hrs played
Recommended · 3 found this helpful

“Gifted all my friends this game, left no comment. 10/10”

— a player, Steam review · 0 hrs played
Not recommended · 4 found this helpful

“I do not recommend”

— a player, Steam review · 0 hrs played
Read more reviews ↗

Achievement stats

Global completion rates across all Steam players — a data view of how far people actually get. Source: Steam official stats · as of 2026-09-26.

100achievements
27.2%median completion
18.4%rarest: IDLE85
98.8% of players 96.8% of players 96.1% of players 93.7% of players 92.3% of players 91.1% of players 91.0% of players 90.6% of players 90.2% of players 89.6% of players 85.8% of players 85.6% of players 81.0% of players 76.9% of players 73.2% of players 72.9% of players 72.5% of players 70.1% of players 69.7% of players 69.4% of players 66.1% of players 63.0% of players 60.0% of players 57.1% of players 54.7% of players 52.3% of players 50.0% of players 48.1% of players 46.2% of players 44.5% of players 43.1% of players 41.7% of players 40.1% of players 40.0% of players 38.8% of players 37.7% of players 36.4% of players 35.6% of players 34.7% of players 33.8% of players 33.0% of players 32.3% of players 31.4% of players 30.7% of players 30.0% of players 29.4% of players 28.9% of players 28.4% of players 27.9% of players 27.4% of players 27.2% of players 26.8% of players 26.4% of players 25.9% of players 25.5% of players 25.1% of players 24.8% of players 24.4% of players 24.1% of players 23.8% of players 98.8% 0% most earned rarest
Almost everyone has
98.8%Moving — Moving
96.8%IDLE1 — IDLE1
96.1%Rotating — Rotating
Rarest badges of honor
18.4%IDLE85 — IDLE85
18.5%IDLE84 — IDLE84
18.5%IDLE83 — IDLE83

Latest official news

Developer announcements via the Steam news API — links go to the original posts. More across all games on the news hub.

May 10, 2025
Game Release

Release Our game is finally released ! To celebrate the release, we started a 40% discount for 2 weeks , so do not miss your chance to obtain your dream stepsister :) Workshop We also want to let you

Games like Your StepSister

From our knowledge graph — ranked by shared traits, not a black box. Each card says why it's here.

Your Mother Your Mother 93.4% · 1,068 reviews shares Dynamic Narration, Emotional, Drama, Comedy Donut County Donut County 91.0% · 7,125 reviews shares Drama, Comedy, Female Protagonist, Family Friendly 100% Orange Juice 100% Orange Juice 92.3% · 17,097 reviews shares Comedy, Female Protagonist, Anime, Family Friendly Kitty Powers' Matchmaker Kitty Powers' Matchmaker 96.0% · 1,299 reviews shares Comedy, Female Protagonist, Anime, Family Friendly Eryi's Action Eryi's Action 85.5% · 695 reviews shares Comedy, Female Protagonist, Anime, Funny CLANNAD CLANNAD 97.1% · 2,202 reviews shares Emotional, Drama, Comedy, Anime Narcissu 1st & 2nd Narcissu 1st & 2nd 94.1% · 2,104 reviews shares Emotional, Drama, Female Protagonist, Anime Necrobarista Necrobarista 86.7% · 737 reviews shares Drama, Comedy, Female Protagonist, Anime

Screenshots

Official Steam store screenshots — click any shot to enlarge.

Facts & details

From the Steam store record, snapshot 2026-09-26.

GenresCasual
Player tagsAnime · Casual · Female Protagonist · 2D · Cute · Emotional · Relaxing · Singleplayer · 3D · Indie · Funny · Action (SteamSpy community voting)
FeaturesSingle-player · Steam Achievements · Steam Workshop · Steam Cloud · Family Sharing
LanguagesEnglish * , French * , Italian * , German * , Spanish - Spain * , Arabic * , Bulgarian * , Czech * , Danish * , Dutch * , Finnish * , Greek * , Hungarian * , Indonesian * , Japanese * , Korean * , Norwegian * , Polish * …
Achievements100
Minimum system requirements (PC)

Minimum: OS *: Windows 8 Processor: Intel i3 Memory: 1 GB RAM Graphics: GTX660 Storage: 1 GB available space