Circle Test Suite — cheap CD keys, compare prices
Is it worth buying?
- 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
Circle Test Suite (Copper Kettle) — Action, Indie, Simulation. 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 €5.19 near low
The cheapest Circle Test Suite key right now costs €5.19 at Steam. The lowest price we have recorded for this game: €5.19.
The average low over the past 2 months was €5.19.
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
€5.19
Sept 2026
Price history
last 10 daysMonthly price lows
| Month | Lowest official | Lowest keyshop |
|---|---|---|
| Oct 2026 | €5.19 | — |
| Sept 2026 | €5.19 | — |
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: €5.19
System requirements
| Minimum | Recommended | |
|---|---|---|
| OS | Windows 10 / 11 64-bit | Windows 10 / 11 64-bit |
| Processor | Quad-core Intel or AMD, 2.5 GHz | Intel Core i5-8400 / AMD Ryzen 5 2600 |
| Memory | 8 GB RAM | 16 GB RAM |
| Graphics | NVIDIA GTX 1060 / AMD RX 580 | NVIDIA RTX 2060 / AMD RX 6600 |
| DirectX | Version 12 | Version 12 |
| Storage | 16 GB available space | 16 GB available space |
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About this game — FAQ
Can Circle Test Suite be played single-player?
Yes, Circle Test Suite is a single-player game.
What languages does Circle Test Suite support?
Circle Test Suite is available in: English, French, Spanish - Spain, Russian.
Does Circle Test Suite use Steam Cloud saves?
Yes, Circle Test Suite uses Steam Cloud, so your saves sync across devices.
FAQ
Where is the cheapest place to buy a Circle Test Suite key?
The cheapest Circle Test Suite key is currently sold by Steam for €5.19. The lowest price we have ever recorded for this game: €5.19.
How much does Circle Test Suite cost?
Circle Test Suite 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.