Buy Big Sister PC Key

When does Big Sister come out? The game has not reached any of the stores we track yet, so there is no price so far. Once the first offers appear we will start recording their history from release day, so later you will be able to see how the price moved from the start. Set an alert and we will write when the game goes on sale.

Release: 20 Sept 2026
HaHaHaGame
Official
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Keyshops
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About Big Sister

Big Sister - about the game

Big Sister is a casual indie desktop companion game for PC that places a Live2D animated character on your screen to provide quiet company during work, study, or breaks. The experience centers on a single character who remains visible in a corner or any chosen spot without requiring active play or objectives.

Gameplay

The core loop involves launching the application so the character settles onto the desktop. She performs idle animations including blinking and breathing, with hair and clothing responding to physics simulation. Her head and eyes track the mouse cursor in real time, creating responsive glances that feel natural during everyday computer use. Players interact minimally by clicking and dragging to reposition her anywhere on the screen or using the mouse wheel while hovering to scale her size up or down. The model stays clear and fully detailed across different scales thanks to optimized rendering.

Transparency around the character allows mouse clicks to pass through unaffected areas, preventing any interference with other desktop tasks or windows. Settings let users toggle between always-on-top mode and standard window behavior depending on the current activity. Right-clicking the character or accessing the system tray icon opens a quick menu for adjustments or exit options. Preferences such as position, size, and display mode save automatically on close.

Game Modes

Big Sister operates as a passive companion without traditional game modes or progression systems. Users customize her presence through placement and scaling tools that adapt to different workflows. Always-on-top keeps her visible over other applications for constant subtle presence, while normal window mode allows her to sit behind active programs when focus is needed elsewhere. Interface options support both Simplified Chinese and English, with the system tray providing fast access to these toggles at any time.

The setup emphasizes flexibility for varied sessions. During focused work or study periods, the character stays unobtrusive yet available. For relaxation breaks, her animated reactions and cursor following add a light layer of engagement without demanding attention or input. No separate modes exist beyond these configuration choices that suit individual routines.

Features and Customization

Live2D technology drives the character's real-time movements and natural physics on clothing and hair. Cursor tracking makes her responsive to user activity on screen, while idle breathing and blinking maintain a lively appearance even when the mouse is still. Size adjustment via mouse wheel works at any position, and edge clarity remains sharp regardless of scale.

Practical options include language selection and persistent saving of all settings. The transparent design ensures seamless integration with normal desktop operations, and the quick menu streamlines changes without leaving the main view. These elements combine to create a low-maintenance addition to any PC workspace.

Who It Is For

This title suits anyone seeking a simple visual companion on their desktop rather than structured gameplay or challenges. It appeals to users who spend long hours at a computer and appreciate a subtle animated presence that does not interrupt tasks. The casual nature fits solo use during productivity or downtime, with no requirements for constant interaction or multiplayer elements.

Is It Worth Playing?

Big Sister delivers exactly what its description promises: a straightforward Live2D desktop pet that stays out of the way while offering quiet company. The responsive animations, easy repositioning, and non-intrusive transparency make it practical for extended sessions at the computer. Those looking for a no-pressure way to add personality to their workspace will find the features functional and reliable. The automatic preference saving and bilingual interface further support daily use across different routines. If the goal is relaxed companionship without objectives or distractions, the game meets that need directly through its focused design.

Interface:
English
Subtitles:
English

Age rating

Unavailable
Historical low
Price history from official stores
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Price history from keyshops
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FAQ

8 questions

Before you start looking for a cheap Big Sister PC key, check the essentials. Developed by HaHaHaGame. Published by HaHaHaGame. PC released date: 20 Sept 2026. Genres: Indie, Casual. Categories: Family Sharing, Single-player.

Q

Where to buy a cheap Big Sister Steam key or CD key?

There are currently no active offers for Big Sister. Set a price alert on XD.deals and we will notify you the moment a deal becomes available.

We don't have a current Steam Store price for Big Sister. The game may be temporarily unavailable or not yet listed on Steam.

Our price tracker covers both official retailers and key marketplaces, so you can find Big Sister on sale even outside seasonal promotions. We currently detect 0 active offers from official stores and keyshops. Check the table above, compare against the historical low, and set an alert so you never miss the next price drop.

Based on our data, Big Sister is not currently available on GeForce NOW. You will need to run it locally on your PC. Browse games available on GeForce NOW.

Yes. Big Sister has an official page on the Steam Store, but we currently don't track any third-party offers with Steam DRM. Check back later or set a price alert.

Not at this time. Valve marks Big Sister as Unsupported on Steam Deck. Keep an eye on XD.deals - we track Proton updates and community fixes. Browse games that are Steam Deck Verified or Steam Deck Playable.

According to our data Big Sister is not currently available on PC Game Pass, EA Play or Ubisoft+. We are still filling in the catalogues of these services, so it is worth confirming the status at the source before you decide. If you are buying, XD.deals will help you find the lowest price.

No - XD.deals is not a store. We are a price-comparison service that tracks the best Big Sister deals across official stores and verified keyshops. Click "Go to Store" next to any offer and you will be redirected to the retailer's website to complete your purchase.

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