OPUS: The Day We Found Earth — cheap CD keys, compare prices
Is it worth buying?
- Reviews are solid. (Steam 87%)
- 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
OPUS: The Day We Found Earth is an emotional indie adventure with a strong narrative focus. The player scans the starry sky in search of the lost planet Earth, guided by a warm, melancholic story. Atmosphere, music and storytelling take center stage, offering a calm, contemplative experience that lingers and leaves a deep emotional impression long after the journey ends.
Did you know?
It was developed by the Taiwanese studio SIGONO as the first entry in the OPUS series.
Best price today
€3.69
all-time low: official €3.69 · keyshop €4.99 near low
The cheapest OPUS: The Day We Found Earth key right now costs €3.69 at Steam — the best of 9 compared offers. The lowest price we have recorded for this game: €3.69.
The average low over the past 5 months was €3.95.
↳ chosen by the region label on the key — not a guarantee
Prices as of
Steam best price Official store
Gog Official store
Fanatical Official store
Kinguin Marketplace
No offers match these filters — try widening them.
Listed seller price shown — payment fees may vary by method.
OPUS: The Day We Found Earth prices by store 8
| Store | Type | Price |
|---|---|---|
| Steam | Official store | €3.69 |
| Kinguin | Marketplace | €4.99 |
| Gog | Official store | €8.01 |
| Fanatical | Official store | €8.99 |
| Gamivo | Marketplace | €16.67 |
| K4G | Marketplace | €18.72 |
| G2A | Marketplace | €19.81 |
| Driffle | Marketplace | €22.47 |
Lowest — official stores
€3.69
Jul 2026
Lowest — keyshops
€4.99
Sept 2026
Price history
last 90 daysMonthly price lows
| Month | Lowest official | Lowest keyshop |
|---|---|---|
| Oct 2026 | €3.69 | €4.99 |
| Sept 2026 | €7.72 | €4.99 |
| Aug 2026 | €3.69 | €6.99 |
| Jul 2026 | €3.69 | €7.99 |
| Jun 2026 | €3.69 | €7.39 |
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, Fanatical, Gamivo, K4G, G2A, Driffle
- GOG key — on GOG.com → Redeem a code (or in GOG Galaxy: Add games & friends → Redeem GOG code). Stores with this activation: Gog
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All-time low so far: €3.69
System requirements
| Minimum | |
|---|---|
| OS | Windows XP, Vista, 7 |
| Processor | 1.4 GHz Dual Core or Greater |
| Memory | 2 GB RAM |
| Graphics | 256 MB OpenGL 2.0 compatible graphics card |
| Storage | 1 GB available space |
Similar games
Video reviews
5:14 OPUS: The Day We Found Earth Review
Redonkulous Gaming
3:03 Opus: The day we found Earth: Switch Review (Point & Click Exploration - Indie Game)
Budget Gamer
5:34 OPUS: The Day We Found Earth Review!
Arunabh Chowdhury
Reviews are made and published by independent YouTube channels; they load only on click.
About this game — FAQ
Can OPUS: The Day We Found Earth be played single-player?
Yes, OPUS: The Day We Found Earth is a single-player game.
What languages does OPUS: The Day We Found Earth support?
OPUS: The Day We Found Earth is available in: English, Japanese, Simplified Chinese, Traditional Chinese, Korean.
FAQ
Where is the cheapest place to buy a OPUS: The Day We Found Earth key?
The cheapest OPUS: The Day We Found Earth key is currently sold by Steam for €3.69. That is the best of 9 offers we compare; prices are refreshed regularly. The lowest price we have ever recorded for this game: €3.69.
How much does OPUS: The Day We Found Earth cost?
OPUS: The Day We Found Earth currently costs from €3.69 — 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.