XO — cheap CD keys, compare prices
Is it worth buying?
- Reviews are solid. (Steam 88%)
- The price is at or near its all-time low — a good time to buy.
Estimate based on public reviews (Metacritic/Steam) and price history — the final call is yours.
About the game
XO is a pausable RTS where players build up a starship fleet in an effort to keep the human race alive. Fleets grow through combat, negotiation, or trickery, all while dodging a persistent enemy faction called the Harvesters. Adding ships grants new powers but drains a limited pool of resources, adding tactical tension to each decision. Developer and publisher Jumpdrive Studios has kept the game in Early Access since 2019.
Best price today
€12.59
all-time low: official €12.59 near low
The cheapest XO key right now costs €12.59 at Steam. The lowest price we have recorded for this game: €12.59.
The average low over the past 4 months was €15.74.
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
€12.59
Oct 2026
Price history
last 71 daysMonthly price lows
| Month | Lowest official | Lowest keyshop |
|---|---|---|
| Oct 2026 | €12.59 | — |
| Sept 2026 | €16.79 | — |
| Aug 2026 | €16.79 | — |
| Jul 2026 | €16.79 | — |
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: €12.59
System requirements
| Minimum | |
|---|---|
| OS | Windows 7 SP1+ |
| Processor | Core i5+ |
| Memory | 2 GB RAM |
| Storage | 400 MB available space |
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About this game — FAQ
Can XO be played single-player?
Yes, XO is a single-player game.
What languages does XO support?
XO is available in: English.
FAQ
Where is the cheapest place to buy a XO key?
The cheapest XO key is currently sold by Steam for €12.59. The lowest price we have ever recorded for this game: €12.59.
How much does XO cost?
XO currently costs from €12.59 — 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.