Space Builder Idle — cheap CD keys, compare prices
Is it worth buying?
The price is at or near the lowest we've tracked — a good time to buy
Buy · Steam €2.31
About the game
In Space Builder Idle you begin with a modest furnace and expand into a full space base, adding one module after another. You staff the station, automate manufacturing, construct an Artificial Sun, and assemble a ship of your own. The Prestige mechanic lets you restart from scratch and keep permanent upgrades. bksilgames developed and published it in 2026.
Best price today
€2.31
· · check “Region” on the seller’s page
Steam · Official store · Steam
Global key · check “Region” on the seller’s page
You pay Steam directly · same price as on their site
Notify me when it drops below €2.08
- On Steam
- €2.31
- lowest in tracked period
- €2.317 Nov
The cheapest Space Builder Idle key right now costs €2.31 at Steam. (Prices as of )
Offers 1 · PC · from €2.31
Prices as of
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Listed seller price shown — payment fees may vary by method.
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Lowest official since we started tracking (Nov 2026)
€2.31
Nov 2026
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
System requirements
| Minimum | Recommended | |
|---|---|---|
| OS | Windows 10 / Windows 11 (64-bit) | Windows 10 / Windows 11 (64-bit) |
| Processor | Intel Core i5-8400 / AMD Ryzen 5 2600 | Intel Core i5-10400 / AMD Ryzen 5 3600 |
| Memory | 8 GB RAM | 16 GB RAM |
| Graphics | NVIDIA GeForce GTX 1050 / AMD Radeon RX 560 | NVIDIA GeForce GTX 1650 / AMD Radeon RX 570 |
| Storage | 1 GB available space | 1 GB available space |
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About this game — FAQ
Can Space Builder Idle be played single-player?
Yes, Space Builder Idle is a single-player game.
What languages does Space Builder Idle support?
Space Builder Idle is available in: English, French, Italian, German, Spanish - Spain, Japanese, Korean, Polish and 8 more.
FAQ
Where is the cheapest place to buy a Space Builder Idle key?
The cheapest Space Builder Idle key is currently sold by Steam for €2.31. The lowest price we have ever recorded for this game: €2.31.
How much does Space Builder Idle cost?
Space Builder Idle currently costs from €2.31 — 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.