My Big Sister — cheap CD keys, compare prices
Is it worth buying?
Reviews are excellent (Steam 93%) · The price is at or near the lowest we've tracked — a good time to buy
Buy · Kinguin €0.30
About the game
My Big Sister is an indie adventure told from the perspective of a girl named Luzia, though the story actually revolves around her sister. It was developed by Stranga Games and published by GrabTheGames.
Did you know?
My Big Sister has a 93% positive rating on Steam (Very Positive).
Best price today
€0.30
· · check “Region” on the seller’s page
Kinguin · Marketplace · Steam
Global key · check “Region” on the seller’s page
You pay at Kinguin · the seller sends the key · same price as on their site
Notify me when it drops below €0.27
- On Steam
- €0.76−61 % here
- all-time low
- €0.304 Aug
- Official now
- €0.76Steam
- Average low, 5 mo.
- €0.44
The cheapest My Big Sister key right now costs €0.30 at Kinguin — the best of 9 compared offers. The cheapest official store price is €0.76 at Steam. (Prices as of )
Offers 9 · PC · from €0.30
Prices as of
No offers match these filters — try widening them.
Listed seller price shown — payment fees may vary by method.
My Big Sister prices by store 7
| Store | Type | Price |
|---|---|---|
| Kinguin | Marketplace | €0.30 |
| Gamivo | Marketplace | €0.47 |
| Driffle | Marketplace | €0.60 |
| K4G | Marketplace | €0.68 |
| Steam | Official store | €0.76 |
| G2A | Marketplace | €0.99 |
| Fanatical | Official store | €4.40 |
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Lowest official since we started tracking (Aug 2026)
€0.76
Sept 2026
Lowest — keyshops
€0.30
Aug 2026
Monthly price lows
| Month | Lowest official | Lowest keyshop |
|---|---|---|
| Oct 2026 | €0.76 | €0.30 |
| Sept 2026 | €0.76 | €0.31 |
| Aug 2026 | €4.40 | €0.30 |
| Jul 2026 | €0.76 | €0.59 |
| Jun 2026 | €5.89 | €0.68 |
Lowest in-stock price per month from our price history; the current month is the low so far.
How to activate your key
- Steam key — open the Steam client → Games → Activate a Product on Steam → enter the key. Stores with this activation: Kinguin, Gamivo, Driffle, K4G, Steam, G2A, Fanatical
System requirements
| Minimum | |
|---|---|
| OS | Windows XP |
| Processor | Intel® Pentium® 4 2.0 GHz equivalent or faster processor |
| Memory | 50 MB RAM |
| Graphics | 64MB RAM |
| Storage | 200 MB available space |
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About this game — FAQ
Can My Big Sister be played single-player?
Yes, My Big Sister is a single-player game.
What languages does My Big Sister support?
My Big Sister is available in: English, Spanish - Spain, Portuguese - Brazil, French, German.
FAQ
Where is the cheapest place to buy a My Big Sister key?
The cheapest My Big Sister key is currently sold by Kinguin for €0.30. That is the best of 9 offers we compare; prices are refreshed regularly. The lowest price we have ever recorded for this game: €0.30.
How much does My Big Sister cost?
My Big Sister currently costs from €0.30 — the cheapest offer across the stores we track. For comparison, the game costs €0.76 on Steam, so buying a key saves you about 61%.
Is Kinguin an official store or a keyshop?
Kinguin is a keyshop (marketplace) where independent sellers list keys, so prices are often lower than in official stores. Every offer on ulov.gg is clearly labeled with its store type.
Are keys from these stores legal?
Buying is legal — keys come from the grey market, so a small deactivation risk exists. So before paying, check the seller's buyer protection.
Which key region should I pick?
Global activates everywhere. Regional keys (Europe, North America, RU-CIS) only work on accounts from that region — use the Region filter to match your account.
What is an activation platform?
The service where the key activates — Steam, GOG, Epic or the publisher's platform. A key for one platform won't work on another, hence the separate filter.
What's the difference between editions?
Standard is the base game; Deluxe usually adds an expansion or bonus content. The edition filter shows exactly that variant, with no mixed prices.