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A Strings Theory 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 €4.99 (no fees) at Steam · 1 verified stores, 1 offers in stock · Updated 16min ago.

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Official stores
Steam 1.8 (3.7k)
No code available
€4.99
Store Steam
Global Icon
Region Global
Steam Key
Product type Steam Key
Standard
Edition Standard
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Fees -

About Strings Theory

Strings Theory is a wacky puzzle / arcade game where you control the particles of life itself!

Inspired by the romantic side of physics, we take you on an epic journey into the heart of Anomaly. Control three unlikely heroes with their own personalities and skills. Beat more than 50 brain-twisting levels. Save the microcosm from a deadly threat!


"Oh, what a beautiful mystery this land is. How inorganic." - Isaac, the smart string

Find yourself in a strange land. It's the Anomaly, where forces unknown converge. Swap between your strings and use their unique skills to avoid the dangers. Collect the quanta of energy, and reach the wormhole to the next level.

Play with friends! Strings Theory supports up to 3-player local co-op. Enjoy a mode where every player controls a different string in front of a single screen. There's a twist: only one string can move at any given time, so you have to talk about your strategy and solve the puzzles together!


Deatomizers that can evaporate you in an instant. Trapdoors to the void of space. Gravitiles that change gravity. The ever-moving Kinetiles, and more.

You're going to need brains to navigate such a treacherous space. A bit of good old arcade timing won't hurt either.


Telly, Isaac, and the Twins used to be your everyday strings. Sucked into the Anomaly, they're our only hope to stop the impending doom.

    Telly is a hot-headed wannabe hero. What he lacks in brains, he makes up for in strength. Use him to push obstacles out of your way.

    Isaac is a mysterious chap with a keen interest in physics. Make him phase through floors to reach unreachable places.

    Twins, or Norm and Sal, are like the poles of a magnet. Separate them, and they'll be more than happy to conjoin.

Can this odd bunch get together and save the world? Yes, but only if you help them!

Features

  • New Universe
    One-in-a-kind setting inspired by the scientific Strings Theory.
  • Unique Gameplay
    Puzzle gameplay mechanics with arcade elements.
  • Wide Content
    50+ levels full of puzzles, collectibles, achievements & more.
  • Heroes
    3 characters with unique skills.
  • Players Co-Op
    Cooperative gameplay style: solo character swapping or up to 3 players locally.

How much does Strings Theory for PC cost right now?

Strings Theory for PC starts at €4.99 (no fees) at Steam, a Steam key.

No day in our records has it been cheaper than today.

There is a single verified offer for it right now, so this price is the market rather than the best of several.

Is it worth buying the Steam Key for Strings Theory now or waiting?

That €4.99 (no fees) key is at one of its best prices.

  • Those €4.99 (no fees) are 56% below what it usually costs, measured on the store price.
  • Only 1 stores sell the Steam Key, and with that little competition the price barely moves.
  • Not counting today, the lowest we have recorded for the Steam Key across 317 days is €4.99, and today it sits exactly there.
At this price it is worth buying the Steam Key now: what you stand to gain by waiting is a few euros, and it is not guaranteed.

Worked out from 329 daily records of the Steam Key for Strings Theory across 1 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 Strings Theory in US?

All 1 offers are Global, so the code redeems on any account no matter where it was created.

Most common FAQs when buying Strings Theory for PC in digital format:

It is a key that will allow you to download the game Strings Theory 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 Strings Theory on PC is €4.99 (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 Strings Theory 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 Strings Theory, 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.

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Strings Theory

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Positive 36 reviews on Steam
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What the press says

US 24 ES 4 FR 1 IT 4 PT 2 RU 1 FA 1

COGconnected

92

The Red Strings Club is a vehicle for some of the most engrossing cyberpunk stories I've witnessed in recent memory. I don't know that I've... Read more

Impulsegamer

92

Old school adventuring has grown up! Read more

Digitally Downloaded

90

Ultimately, The Red Strings Club tries and succeeds to be deeply thought provoking. Whereas other sci-fi games can tell a great story and make the... Read more

Attack of the Fanboy

90

The Red Strings Club is a true cyberpunk classic. Pixel-art visuals and a cyberpunk world make way for fascinating gameplay and a truly compelling, well... Read more

About the game

Release date
14 Dec 2021
Genre
Adventure Indie Casual
Modes
Singleplayer Co-op Local Co-Op
Setting
Atmospheric Surreal Retro
Languages
English French Italian

Requirements

Minimum:
  • OS *: Windows 7, Windows 8, Windows 10
  • 2.3 GHz Intel i3 or comparable
  • 2 GB RAM
  • Shader Model 3.0 capabilities
  • Version 10
  • 2500 MB available space
Recommended:
  • OS *: Windows 7, Windows 8, Windows 10
  • 3.0 GHz Intel i5 or comparable
  • 4 GB RAM
  • Dedicated graphics card
  • Version 11
  • 2500 MB available space
Minimum:
  • macOS 10.12+
  • Dual Core 2.4GHz
  • 4 GB RAM
  • Intel HD 3000
  • 2500 MB available space
Recommended:
  • macOS 10.14+
  • Quad Core 3.0 GHz+
  • 8 GB RAM
  • Intel UHD 630+
  • 2500 MB available space

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