Photon Engineer — 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
Photon Engineer is a puzzle title set in a science-fiction world, where the player masters laser and environmental manipulation to work through inventive challenges. The setting takes shape on strange floating structures that popped up out of nowhere close to Jupiter, and uncovering what lies behind them drives the game forward. The game was developed by Grégory Petit and published by Deer Vision in 2023.
Best price today
€2.99
all-time low: official €2.99 · keyshop €10.56 near low
The cheapest Photon Engineer key right now costs €2.99 at Steam — the best of 2 compared offers. The lowest price we have recorded for this game: €2.99.
The average low over the past 4 months was €4.12.
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.
Photon Engineer prices by store 2
| Store | Type | Price |
|---|---|---|
| Steam | Official store | €2.99 |
| Kinguin | Marketplace | €10.56 |
Lowest — official stores
€2.99
Oct 2026
Lowest — keyshops
€10.56
Aug 2026
Price history
last 89 daysMonthly price lows
| Month | Lowest official | Lowest keyshop |
|---|---|---|
| Oct 2026 | €2.99 | €10.56 |
| Sept 2026 | €4.99 | €10.56 |
| Aug 2026 | €4.99 | €10.56 |
| Jul 2026 | €3.49 | €10.98 |
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
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All-time low so far: €2.99
System requirements
| Minimum | Recommended | |
|---|---|---|
| OS | Windows 10 / 11 | Windows 10 / 11 |
| Processor | Intel Core i5-8400 / AMD Ryzen 5 2400G | Intel Core i5-8400 / AMD Ryzen 5 2400G |
| Memory | 16 GB RAM | 16 GB RAM |
| Graphics | GeForce GTX 1060 (3GB) / Radeon RX 580 (4GB) / Arc A580 (8GB) | GeForce GTX 1060 (3GB) / Radeon RX 580 (4GB) / Arc A580 (8GB) |
| Storage | 1 GB available space | 1 GB available space |
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About this game — FAQ
Can Photon Engineer be played single-player?
Yes, Photon Engineer is a single-player game.
What languages does Photon Engineer support?
Photon Engineer is available in: English, French, Portuguese - Brazil, Spanish - Latin America.
FAQ
Where is the cheapest place to buy a Photon Engineer key?
The cheapest Photon Engineer key is currently sold by Steam for €2.99. That is the best of 2 offers we compare; prices are refreshed regularly. The lowest price we have ever recorded for this game: €2.99.
How much does Photon Engineer cost?
Photon Engineer currently costs from €2.99 — 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.