CITADEL — cheap CD keys, compare prices
Is it worth buying?
- The price is above its low (was €4.41), 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
CITADEL (Liam Atkinson) — Adventure, Indie. On this page we track CD key prices across editions, regions and activation platforms from trusted sellers, with price history and a DLC overview.
Best price today
€5.19
lowest in tracked period: official €4.41 (+18%)
The cheapest CITADEL key right now costs €5.19 at Steam. The lowest price we have recorded for this game: €4.41.
The average low over the past 2 months was €4.41.
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
€4.41
Sept 2026
Price history
last 10 daysMonthly price lows
| Month | Lowest official | Lowest keyshop |
|---|---|---|
| Oct 2026 | €4.41 | — |
| Sept 2026 | €4.41 | — |
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: €4.41
System requirements
| Minimum | |
|---|---|
| OS | Windows 10 or higher |
| Processor | 2.0 Ghz 64-bit Intel-compatible |
| Memory | 2 GB RAM |
| Graphics | OpenGL 3.0 or DirectX 11 |
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About this game — FAQ
Can CITADEL be played single-player?
Yes, CITADEL is a single-player game.
Does CITADEL support a controller/gamepad?
Yes, CITADEL has full controller support.
What languages does CITADEL support?
CITADEL is available in: English.
Does CITADEL use Steam Cloud saves?
Yes, CITADEL uses Steam Cloud, so your saves sync across devices.
FAQ
Where is the cheapest place to buy a CITADEL key?
The cheapest CITADEL key is currently sold by Steam for €5.19. The lowest price we have ever recorded for this game: €4.41.
How much does CITADEL cost?
CITADEL currently costs from €5.19 — 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.