Releases by store
| Store / edition | Play on | Release | Price |
|---|---|---|---|
| Steam | PC | Sep 20, 2026Exact day | — |
About this game
Big Sister is a Live2D companion desktop pet game that stays with you while you work, study, or relax. She follows your cursor and comes alive through natural blinking, breathing, and physics-based movement. Drag, resize, and choose whether she stays on top to make her feel at home on your desktop.
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