X4: Foundations — cheap CD keys, compare prices
Is it worth buying?
Reviews are solid (Steam 80%) · The price is above its low (was €2.50), but within a reasonable range Notify me on a drop
About the game
A space sandbox where you start with a single ship and end up managing fleets, stations and entire economies. The whole universe is simulated — NPC factories genuinely produce and trade — and you can personally fly every ship or command from the map.
Did you know?
German studio Egosoft has been making the X series since X: Beyond the Frontier in 1999; X4 is the entry that won fans back after the poorly received X Rebirth.
Best price today
€3.15
· · check “Region” on the seller’s page
Kinguin · Marketplace · Steam
Americas 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 €2.84
- On Steam
- €49.99−94 % here
- all-time low
- €2.5017 Oct
- Official now
- €49.99Steam
- Average low, 5 mo.
- €4.30
The cheapest X4: Foundations key right now costs €3.15 at Kinguin — the best of 24 compared offers. The cheapest official store price is €49.99 at Steam. (Prices as of )
Offers 24 · PC · from €3.15
Prices as of
No offers match these filters — try widening them.
Listed seller price shown — payment fees may vary by method.
X4: Foundations prices by store 9
| Store | Type | Price |
|---|---|---|
| Kinguin | Marketplace | €3.15 |
| Gamivo | Marketplace | €3.28 |
| K4G | Marketplace | €4.46 |
| Driffle | Marketplace | €4.57 |
| GameSeal | Marketplace | €4.83 |
| Instant Gaming | Marketplace | €5.69 |
| G2A | Marketplace | €6.57 |
| Loaded | Marketplace | €7.59 |
| Steam | Official store | €49.99 |
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Lowest official since we started tracking (Aug 2026)
€9.99
Aug 2026
Lowest — keyshops
€2.50
Oct 2026
Monthly price lows
| Month | Lowest official | Lowest keyshop |
|---|---|---|
| Oct 2026 | €9.99 | €2.50 |
| Sept 2026 | €9.99 | €2.97 |
| Aug 2026 | €9.99 | €3.99 |
| Jul 2026 | €9.99 | €4.76 |
| Jun 2026 | €9.99 | €7.28 |
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, K4G, Driffle, GameSeal, Instant Gaming, G2A, Loaded, Steam
System requirements
| Minimum | Recommended | |
|---|---|---|
| OS | Windows 10 (64-bit) or higher | Windows 10 (64-bit) or higher |
| Processor | Intel i5-4590 3.3GHz or AMD equivalent | Intel Core i7-6700 or AMD equivalent |
| Memory | 8 GB RAM | 16 GB RAM |
| Graphics | Nvidia GTX 780/970 or AMD equivalent (Vulkan support required) | Nvidia GTX 1070 or AMD equivalent (Vulkan support required) |
| Storage | 35 GB available space | 50 GB available space |
Similar games
Video reviews
14:42 X4 Foundations Review // Is It Worth It?!
Nyxson
![The Best Space-Sim Ever Created || X4: Foundations Review and Interview [Feat. @guildofnoobs]](https://i.ytimg.com/vi/ZJ0tGf9GEQc/hqdefault.jpg)
27:43 The Best Space-Sim Ever Created || X4: Foundations Review and Interview [Feat. @guildofnoobs]
CygnusMC
4:36 X4 Foundations Review: Is It Still Worth Playing?
Sir Nebula
Reviews are made and published by independent YouTube channels; they load only on click.
About this game — FAQ
Can X4: Foundations be played single-player?
Yes, X4: Foundations is a single-player game.
Does X4: Foundations support a controller/gamepad?
Yes, X4: Foundations has full controller support.
What languages does X4: Foundations support?
X4: Foundations is available in: English, German, French, Italian, Simplified Chinese, Portuguese - Brazil, Spanish - Spain, Traditional Chinese and 6 more.
Does X4: Foundations use Steam Cloud saves?
Yes, X4: Foundations uses Steam Cloud, so your saves sync across devices.
FAQ
Where is the cheapest place to buy a X4: Foundations key?
The cheapest X4: Foundations key is currently sold by Kinguin for €3.15. That is the best of 24 offers we compare; prices are refreshed regularly. The lowest price we have ever recorded for this game: €2.50.
How much does X4: Foundations cost?
X4: Foundations currently costs from €3.15 — the cheapest offer across the stores we track. For comparison, the game costs €49.99 on Steam, so buying a key saves you about 94%.
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.