Quantum Odyssey — cheap CD keys, compare prices
Is it worth buying?
- Reviews are excellent. (Steam 93%)
- 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
Quantum Odyssey is a Zachlike-style puzzle game with an open structure, tasking players with designing, refining, and reverse-engineering actual quantum algorithms. It offers more than 500 optimization puzzles, allows players to hack into solutions built by others, and builds an intuitive grasp of quantum computing without requiring any programming. Currently in Early Access, it was both developed and published by Quarks Interactive starting in 2025.
Did you know?
On Steam it has a 93% positive rating from 156 reviews, tagged 'Very Positive.'
Best price today
€2.15
all-time low: official €7.79 · keyshop €2.14 near low
On Steam: €7.79 — you save 72% here
The cheapest Quantum Odyssey key right now costs €2.15 at Kinguin — the best of 3 compared offers. The lowest price we have recorded for this game: €2.14. The cheapest official store price is €7.79 at Steam.
The average low over the past 4 months was €5.44.
Prices as of
Steam Official store
No offers match these filters — try widening them.
Listed seller price shown — payment fees may vary by method.
Quantum Odyssey prices by store 3
| Store | Type | Price |
|---|---|---|
| Kinguin | Marketplace | €2.15 |
| G2A | Marketplace | €4.01 |
| Steam | Official store | €7.79 |
Lowest — official stores
€7.79
Oct 2026
Lowest — keyshops
€2.14
Oct 2026
Price history
last 89 daysMonthly price lows
| Month | Lowest official | Lowest keyshop |
|---|---|---|
| Oct 2026 | €7.79 | €2.14 |
| Sept 2026 | €9.09 | €3.74 |
| Aug 2026 | €9.09 | €7.87 |
| Jul 2026 | €9.09 | €7.99 |
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: Kinguin, G2A, Steam
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All-time low so far: €2.14
System requirements
| Minimum | Recommended | |
|---|---|---|
| OS | 64-bit Windows 10 / 11 | 64-bit Windows 10 / 11 |
| Processor | Intel® Core™ i7-2600 | Intel® Core™ i5-6600 |
| Memory | 4 GB RAM | 8 GB RAM |
| Graphics | NVIDIA GeForce 8800 GT | NVIDIA GeForce GTX 760 |
| DirectX | Version 10 | Version 10 |
| Storage | 2 GB available space | 2 GB available space |
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About this game — FAQ
Can Quantum Odyssey be played single-player?
Yes, Quantum Odyssey is a single-player game.
What languages does Quantum Odyssey support?
Quantum Odyssey is available in: English.
FAQ
Where is the cheapest place to buy a Quantum Odyssey key?
The cheapest Quantum Odyssey key is currently sold by Kinguin for €2.15. That is the best of 3 offers we compare; prices are refreshed regularly. The lowest price we have ever recorded for this game: €2.14.
How much does Quantum Odyssey cost?
Quantum Odyssey currently costs from €2.15 — the cheapest offer across the stores we track. For comparison, the game costs €7.79 on Steam, so buying a key saves you about 72%.
Is Kinguin an official store or a keyshop?
Kinguin is a keyshop (marketplace) where independent sellers list keys, so prices are often lower than in official stores. Every offer on ulov.gg is clearly labeled with its store type.
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.