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A Quantum Conundrum Steam Key — also known as a CD Key or digital code — is the official activation code you redeem on Steam and keep in your library permanently. From €1.31 (no fees) at YUPLAY · 12 verified stores, 16 offers in stock · Updated 38min ago.

See 16 keys from €1.31
Historical prices
Medium price
Current minimum price
Quantum Conundrum prices: 12-month price history →
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No payment fees With payment fees

Final prices with fees and discounts applied

YUPLAY 4.8 (2.5k)
No code available
€1.31
Store YUPLAY
Global Icon
Region Global
Steam Key
Product type Steam Key
Standard
Edition Standard
Description Icon
Fees -
Gameseal 4.3 (16.3k)
Subscription from 2.49€/month
-15%
Coupon
SEAL17CKD -17% copy Copied!
€1.35 €1.12
Store Gameseal
Global Icon
Region Global
Steam Key
Product type Steam Key
Standard
Edition Standard
Description Icon
Fees +€0.49
Kinguin 4.6 (120.4k)
Subscription from 2.99€/month
-15%
Coupon
OCTGOC10 -10% copy Copied!
€1.32 €1.19 How to get this priceHow to get
Store Kinguin
Global Icon
Region Global
Steam Key
Product type Steam Key
Standard
Edition Standard
Description Icon
Fees +€0.44
K4G 4.3 (17.6k)
Coupon
GCDK14DEAL -14% copy Copied!
€1.37 €1.18
Store K4G
Global Icon
Region Global
Steam Key
Product type Steam Key
Standard
Edition Standard
Description Icon
Fees +€0.50
Instant Gaming 4.7 (833.8k)
No code available
€1.69
Store Instant Gaming
Global Icon
Region Global
Steam Key
Product type Steam Key
Standard
Edition Standard
Description Icon
Fees -
K4G 4.3 (17.6k)
Coupon
GCDK14DEAL -14% copy Copied!
€1.40 €1.20
Store K4G
Europe Icon
Region Europe
Steam Key
Product type Steam Key
Standard
Edition Standard
Description Icon
Fees +€0.50
Driffle 4.4 (9.2k)
Subscription from 4.99€/month
-8%
Coupon
GOCDKEYS10 -10% copy Copied!
€1.45 €1.31
Store Driffle
Global Icon
Region Global
Steam Key
Product type Steam Key
Standard
Edition Standard
Description Icon
Fees +€0.45
Cdkeys Com 4.8 (224.4k)
No code available
€1.79
Store Cdkeys Com
Global Icon
Region Global
Steam Key
Product type Steam Key
Standard
Edition Standard
Description Icon
Fees -
Driffle 4.4 (9.2k)
Subscription from 4.99€/month
-8%
Coupon
GOCDKEYS10 -10% copy Copied!
€1.53 €1.38
Store Driffle
Europe Icon
Region Europe
Steam Key
Product type Steam Key
Standard
Edition Standard
Description Icon
Fees +€0.45
Kinguin 4.6 (120.4k)
Subscription from 2.99€/month
-15%
Coupon
OCTGOC10 -10% copy Copied!
€1.54 €1.39 How to get this priceHow to get
Store Kinguin
Europe Icon
Region Europe
Steam Key
Product type Steam Key
Standard
Edition Standard
Description Icon
Fees +€0.46
Gamivo 3.8 (49.7k)
Subscription from 2.01€/month
-9%
Coupon
GCDKGamivo -23% copy Copied!
€1.51 €1.16 How to get this priceHow to get
Store Gamivo
Global Icon
Region Global
Steam Key
Product type Steam Key
Standard
Edition Standard
Description Icon
Fees +€0.79
Eneba 4.4 (312.9k)
Coupon
Gocdkeys10 -10% copy Copied!
€1.49 €1.34 How to get this priceHow to get
Store Eneba
Global Icon
Region Global
Steam Key
Product type Steam Key
Standard
Edition Standard
Description Icon
Fees +€0.66
Eneba 4.4 (312.9k)
Coupon
Gocdkeys10 -10% copy Copied!
€1.61 €1.45 How to get this priceHow to get
Store Eneba
Europe Icon
Region Europe
Steam Key
Product type Steam Key
Standard
Edition Standard
Description Icon
Fees +€0.67
Gaming Dragons 2.3 (203)
No code available
€2.28
Store Gaming Dragons
Global Icon
Region Global
Steam Key
Product type Steam Key
Standard
Edition Standard
Description Icon
Fees +€0.21
G2A 4.0 (346.2k)
No code available
€2.50 How to get this priceHow to get
Store G2A
Global Icon
Region Global
Steam Key
Product type Steam Key
Standard
Edition Standard
Description Icon
Fees +€0.29
Official stores
GamesPlanet 4.3 (629)
No code available
€7.96
Store GamesPlanet
Global Icon
Region Global
Steam Key
Product type Steam Key
Standard
Edition Standard
Description Icon
Fees -

How much does Quantum Conundrum for PC cost right now?

Quantum Conundrum for PC starts at €1.31 (no fees) at YUPLAY, a Steam key.

With 16 offers across 12 stores there is enough competition for the price to move, so the gap between the cheapest and the rest is worth checking before you buy.

Is it worth buying the Steam Key for Quantum Conundrum now or waiting?

That €1.31 (no fees) key is at its usual price: no bargain, no spike.

  • Those €1.31 (no fees) are 20% below what it usually costs, measured on the store price.
  • 12 stores sell the Steam Key at the same time, and with that much competition the price moves almost daily.
  • Not counting today, 709 days out of the 1,726 days on record were this cheap or cheaper; the lowest it has ever cost is €1.07.
It is not a bad price, but it is not this Steam Key's floor either. If you are in no rush, we will tell you the day it drops.

Worked out from 2,737 daily records of the Steam Key for Quantum Conundrum across 14 stores. See the full price history.

The price does not include each store's payment fees. The percentage is measured on the store price, without coupons, because that is how we record the history. The analysis only counts Key offers. Shared accounts, Steam Gift and physical editions stay out, because they are not the same product and their prices move differently.

Can you activate Quantum Conundrum in US?

12 of the 16 offers work on US — the Global ones plus the ones issued for your own region.

Why is there such an expensive Quantum Conundrum offer?

One listing is worth ignoring: the Steam key that GamesPlanet has at €7.96 (no fees) is more than 6 times the cheapest offer and is not what this game costs. The number to work from is €1.31 (no fees) at YUPLAY.

When you’re dropped off to visit your uncle, you notice something’s wrong. He’s not there to greet you. There was an explosion just as you arrived. And the house seems to be even weirder than you remember. It’s up to you to find—and ultimately rescue—your uncle. Use his newest invention, the Interdimensional Shift Device (or IDS), to switch between five different dimensions and solve puzzles. Switch dimensions in real time, work your way through the crazy complex mansion, and rescue your uncle!

Most common FAQs when buying Quantum Conundrum for PC in digital format:

It is a key that will allow you to download the game Quantum Conundrum on your PC from official download platforms.
As of 03/10/2026, in United States, the best price we have found in our selection of online stores that include the key for Quantum Conundrum on PC is €1.31 (no fees).
The Steam Key format is what we always recommend due to its ease of use and higher security compared to any other format. You just need to redeem the key in your account to download Quantum Conundrum to your game library. The account format requires more complicated steps and is more prone to errors during activation.
The only issue we’ve encountered in 13 years is receiving a duplicate key that doesn’t work. In that case, simply contact the store where you bought Quantum Conundrum , and they will provide a new key. You can also contact us, and we’ll help you out.
Delivery times vary by store. For example, in the case of Instatgaming, Eneba, G2a, or Kinguin, delivery is usually instant or takes just a few minutes. These stores rarely delay game deliveries.

Other stores may take 30–40 minutes depending on game availability. On release days, delivery times may be slightly longer.

If you notice an unusually long delay, contact the store or us, and we’ll resolve it as quickly as possible.
At Gocdkeys, we only list the most well-known stores that have passed our quality checks. One of the most important factors is good customer support, and all listed stores offer it.

There have been occasions when those services were overwhelmed, which is why we also offer 24/7 customer support to help resolve any issues or questions.

In any case, we always offer a 100% guarantee, so you won’t have any problems, and if you do, we’ll resolve them as soon as possible.

Need more help? Use our FAQs.

What do our users think of Quantum Conundrum for PC Digital?

5/5 (5 Comments)
Avatar
mobin70
2015-04-09 14:25:22

2d games are fun

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Quantum Conundrum

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About the game

Release date
3 Jul 2017
Genre
Adventure

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