Big Sister
A desktop pet whose head and eyes follow your cursor
HaHaHaGame · Released Sep 21, 2026
- Reviews
- Very Positive
- 100% of 50
- Recent reviews
- Not enough recent
- Players
- 0
- daily peak, Oct 28, 2026
- Steam Deck
- Untested
- Last update on Steam
- 1 month ago
- Sep 23, 2026
What is Big Sister?
This single-player, 2D desktop pet game lets you move and resize a character alongside your other windows. You control whether she stays on top or lets clicks pass through, and choose static or animated wallpapers, including your own GIFs and MP4 videos.
For you if...
- +you prefer idle companionship without schedules or constant attention
Not for you if...
- −you expect several built-in characters to choose from
Screenshots and trailer
Big Sister system requirements
Minimum: HD 4400, 0.4 GB RAM, 0.4 GB of disk space.
As published by the developer.
Can my PC run Big Sister?
Tell us your graphics card once and every game page will answer this for you.
Set up my PC →Minimum
- OS
- Windows 7
- Processor
- i5
- Graphics
- Intel HD Graphics 4400
- Memory
- 400 MB RAM
- Storage
- 400 MB available space
Does Big Sister have co-op or multiplayer?
No: single-player only, no multiplayer modes declared.
Does Big Sister run on Steam Deck?
Untested Not yet tested by Valve on Steam Deck.
PC version details
- DRM
- None declared on Steam
- Controller
- Keyboard and mouse
- Platforms
- Windows
- Achievements
- 10
- Steam features
- Workshop, Cloud saves, Family Sharing
- Languages
- Full audio: English, French, Italian, German, Spanish - Spain, Danish, Ukrainian, Russian, Bulgarian, Hungarian, Indonesian, Turkish, Greek, Norwegian, Czech, Japanese, Polish, Thai, Swedish, Simplified Chinese, Traditional Chinese, Romanian, Finnish, Dutch, Portuguese - Brazil, Portuguese - Portugal, Spanish - Latin America, Vietnamese, Korean, Malay.
Does Big Sister use AI-generated content?
No AI-generated content is disclosed on the game's Steam page.
Self-reported by the developer under Steam rules: it covers AI content that ships in the game, not tools used to make it. Steam page checked on Oct 28, 2026. How to filter AI games on Steam
