Aethernaut — 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
Aethernaut opens with the player waking up with no memory of their identity, only to be told by a mysterious voice that they are called 'the Aethernaut' — someone able to move through a hazardous zone called the Construct, where the aether itself proves lethal. From there, the game has you work through a sequence of rooms, solving experiments while piecing together your own backstory. The central question is whether you can get out of the Construct in time. Dragon Slumber developed the game, Iceberg Interactive published it, and it launched in 2022.
Best price today
€2.96
all-time low: official €2.96 · keyshop €4.89 near low
The cheapest Aethernaut key right now costs €2.96 at Steam — the best of 5 compared offers. The lowest price we have recorded for this game: €2.96.
The average low over the past 4 months was €2.96.
Prices as of
Steam best price Official store
Fanatical Official store
No offers match these filters — try widening them.
Listed seller price shown — payment fees may vary by method.
Aethernaut prices by store 5
| Store | Type | Price |
|---|---|---|
| Steam | Official store | €2.96 |
| Kinguin | Marketplace | €6.02 |
| Instant Gaming | Marketplace | €6.39 |
| G2A | Marketplace | €9.07 |
| Fanatical | Official store | €13.91 |
Lowest — official stores
€2.96
Jul 2026
Lowest — keyshops
€4.89
Sept 2026
Price history
last 89 daysMonthly price lows
| Month | Lowest official | Lowest keyshop |
|---|---|---|
| Oct 2026 | €2.96 | €6.02 |
| Sept 2026 | €2.96 | €4.89 |
| Aug 2026 | €2.96 | €6.02 |
| Jul 2026 | €2.96 | €6.31 |
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, Kinguin, Instant Gaming, G2A, Fanatical
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All-time low so far: €2.96
System requirements
| Minimum | Recommended | |
|---|---|---|
| OS | Windows 7 or greater | Windows 7 or greater |
| Processor | Intel Core i5 @ 2.0 GHz | Intel Core i5 @ 2.0 GHz |
| Memory | 8 GB RAM | 16 GB RAM |
| Graphics | GeForce GTX 1070 or AMD Radeon RX Vega 56 4 GB | GeForce GTX2060 or AMD Radeon RX 5600 XT |
| Storage | 13 GB available space | 15 GB available space |
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About this game — FAQ
Can Aethernaut be played single-player?
Yes, Aethernaut is a single-player game.
Does Aethernaut support a controller/gamepad?
Yes, Aethernaut has full controller support.
What languages does Aethernaut support?
Aethernaut is available in: English, French, German, Japanese, Korean, Simplified Chinese.
Does Aethernaut use Steam Cloud saves?
Yes, Aethernaut uses Steam Cloud, so your saves sync across devices.
FAQ
Where is the cheapest place to buy a Aethernaut key?
The cheapest Aethernaut key is currently sold by Steam for €2.96. That is the best of 5 offers we compare; prices are refreshed regularly. The lowest price we have ever recorded for this game: €2.96.
How much does Aethernaut cost?
Aethernaut currently costs from €2.96 — 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.