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Big Sister

Big Sister

A desktop pet game with a companion who blinks, breathes, and follows your cursor. Drag, resize, pin, lock or hide her, and pair her with static, GIF or MP4 wallpapers. Discover and share characters and wallpapers through Steam Workshop for company while you work, study or relax.

Released Sep 21, 2026 Developer HaHaHaGame Platforms Windows CasualIdler2DCuteCozy
View on Steam ↗ $0.79 (US · as of 2026-09-26)

What players say

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

100.0%positive50 reviews
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.

10achievements
43.2%median completion
42.7%rarest: Treasured Memories
45.4% of players 44.8% of players 43.7% of players 43.7% of players 43.2% of players 43.2% of players 43.2% of players 43.2% of players 43.2% of players 42.7% of players 45.4% 0% most earned rarest
Almost everyone has
45.4%First Hello — A little hello, and a new beginning together.
44.8%A Little Kindness — A little ribbon, tied with kindness.
43.7%Always by Your Side — May this company bring a little warmth to every day.
Rarest badges of honor
42.7%Treasured Memories — Keep the little lovely moments close.
43.2%Starlit Company — A little star to brighten a quiet night.
43.2%Warm Company — A warm little light to keep you company.

Screenshots

Official Steam store screenshots — click any shot to enlarge.

Facts & details

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

GenresCasual, Indie
Player tagsCasual · Idler · 2D · Cute · Cozy · Female Protagonist · Indie · Singleplayer (Steam store community voting)
FeaturesSingle-player · Steam Achievements · Steam Workshop · Steam Cloud · Family Sharing
LanguagesEnglish * , French * , Italian * , German * , Spanish - Spain * , Danish * , Ukrainian * , Russian * , Bulgarian * , Hungarian * , Indonesian * , Turkish * , Greek * , Norwegian * , Czech * , Japanese * , Polish * , Thai…
Achievements10
Minimum system requirements (PC)

Minimum: OS *: Windows 7 Processor: i5 Memory: 400 MB RAM Graphics: Intel HD Graphics 4400 Storage: 400 MB available space