I thought I knew you — cheap CD keys, compare prices
Is it worth buying?
- The price is above its low (was €3.11), but within a reasonable range. Notify me on a drop →
Estimate based on public reviews (Metacritic/Steam) and price history — the final call is yours.
About the game
I thought I knew you is a visual novel in the yuri genre, centered on growing up on a university campus and seen through the eyes of its female protagonist. Players guide her as she grows closer to three different girls, with choices along the way branching the story toward multiple endings. The game was created and published by Baamurin in 2026.
Best price today
€4.15
lowest in tracked period: official €3.11 (+33%)
The cheapest I thought I knew you key right now costs €4.15 at Steam. The lowest price we have recorded for this game: €3.11.
The average low over the past 3 months was €3.46.
Prices as of
Steam best price Official store
No offers match these filters — try widening them.
Listed seller price shown — payment fees may vary by method.
Lowest — official stores
€3.11
Aug 2026
Price history
last 36 daysMonthly price lows
| Month | Lowest official | Lowest keyshop |
|---|---|---|
| Oct 2026 | €4.15 | — |
| Sept 2026 | €3.11 | — |
| Aug 2026 | €3.11 | — |
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: Steam
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All-time low so far: €3.11
System requirements
| Minimum | |
|---|---|
| OS | Windows 10 |
| Processor | Intel Core i3 |
| Memory | 4 GB RAM |
| Storage | 600 MB available space |
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About this game — FAQ
Can I thought I knew you be played single-player?
Yes, I thought I knew you is a single-player game.
What languages does I thought I knew you support?
I thought I knew you is available in: English, Simplified Chinese, Japanese.
FAQ
Where is the cheapest place to buy a I thought I knew you key?
The cheapest I thought I knew you key is currently sold by Steam for €4.15. The lowest price we have ever recorded for this game: €3.11.
How much does I thought I knew you cost?
I thought I knew you currently costs from €4.15 — the cheapest offer across the stores we track.
Is Steam an official store or a keyshop?
Steam is an official store — keys come directly from the publisher or an authorized distributor.
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.