String Theory

String Theory (2016)

Zenisport · February 17, 2016 · Casual, Education, Music, Indie, Puzzle

Buy String Theory from Steam at $8.99 — the cheapest of 2 stores we compare. The cheapest String Theory key from a keyshop is $9.76 at Kinguin.

PC
Mostly Positive75% · 53
Best price
$8.99
lowest tracked $0.89
Steam Buy at Steam

Prices last checked

More games under $10 →More Steam deals →

Where to buy String Theory — official stores

Steam
Steam
Standard Edition · Steam
$8.99
Buy

Cheapest String Theory keys — keyshops

Keyshops are third-party marketplaces — keys are resold and can be region-locked or a different edition. Check the listing's region & edition before buying.

Kinguin
Standard Edition · Steam
$9.76
Buy

String Theory price by region

String Theory costs £5.99 in the United Kingdom, $5.99 in Georgia (USD), €7.51 in Europe (EUR), $8.99 in the United States, CA$9.99 in Canada, NZ$10.99 in New Zealand, R$17.99 in Brazil and zł32.99 in Poland right now.

Cheapest String Theory offer in each region, in local currency
RegionBest priceOfficial storeKey shopStores
United Kingdom £5.99 £5.99 £6.53 2
Georgia (USD) $5.99 $5.99 $9.76 2
Europe (EUR) €7.51 −16% €8.99 €7.51 2
United Statesyour region $8.99 $8.99 $9.76 2
Canada CA$9.99 CA$9.99 — 1
New Zealand NZ$10.99 NZ$10.99 — 1
Brazil R$17.99 R$17.99 — 1
Poland zł32.99 zł32.99 zł41.94 2

Each row is a real price from that region's own stores, not a currency conversion, so the figures are not directly comparable. Switch regions in the header to shop the one you buy in.

Screenshots

About String Theory

You've played rhythm games, but have you ever played a music game? String Theory is a unique audio puzzle game that trains the player to recognize musical chords. Pit your ear against 20 different BGMs, each with 14 different chord variations.

Whether you're a formally trained musician who wants to keep your skills sharp or are a casual listener who wants to appreciate music in a new way, String Theory offers a cacophony of challenges.

Features:

- 20 original pieces of music, each with 14 different chord variations, by composer Shael Riley.

- Test your abilities against over 20 instruments.

- Learn to recognize major, minor, and seventh chords.

- Randomized levels

- Mix your instruments up in Chaos mode or race against the clock with Time Attack.

String Theory — game info

Platforms
Windows
Player modes
Single-player
PC Game Pass
Not included

DLC & expansions

🎁 Complete the collection

Base game + 1 of 1 DLC at today's best prices.

$11.98
to own everything

What Steam players say

Recent verbatim reviews from Steam — separate from playze.io community reviews below.

✦ AI summary

Players praise the game as a useful, affordable ear training tool that effectively helps musicians learn chord recognition and structure, particularly beneficial for beginners and those learning instruments like ukulele. However, common criticisms include occasional incorrect answers, limited difficulty progression that becomes too easy for intermediate players, and tedious mechanics like full tier resets from single mistakes, with some feeling the price isn't justified and wishing for more advanced features like chord progressions and interval recognition to extend its usefulness.

Recommended Dec 25, 2017
It is a fun educational game for those who play musical instruments. In a casual/puzzle mode you can test and train your ears to recognize chords.
3 found this helpful
Recommended Jan 16, 2020
This helps me build chords without looking up charts on ukulele. It's especially useful because ukulele has a lot of inverted notes in chords which the game has practice for. You listen to the key of the music in the background to figure out what key you're in then you cut the string that causes dissonance in the chord. The difficulty goes from absolute beginner to challenging even if you study music theory. If you're good at music theory there isn't a lot of competition in the leaderboards, if you're still learning music this is a great learning tool.
1 found this helpful
Not recommended Mar 14, 2018
Boring and wrong. This is my 3rd try for this game. Just failed a question where Eminor was implied but still had the the major 3 as a option.
1 found this helpful
Not recommended Aug 18, 2025
I wouldn't say this is worth 9 dollars.
Recommended Jun 25, 2024
For £6 this game is very worthwhile, for me. I do hope the dev continues to develop this game. In its current form, it is probably best suited to those who've just started on the musical path in some form. I found the first few tiers (basic major and minor chords) very easy, but it helped to reinforce my shaky knowledge of chord structure. For me, things got much more challenging when it started introducing seven strings, with 7th chord inversions. With 8 strings, I found it tedious when you get most of the tier correct but then have to restart the tier because of one mistake. Still, it seems a good-value ear training program, suited to budding musicians.
Recommended Dec 21, 2023
Pretty good game. Only downside is that it isn't hard at all. So the ammount of ear training you can achieve is limited. I would've the devs add chord progressions, chord inversions (that you must identify) and borrowed chords to make it more interesting and useful. I guess there are apps for mobile that do that, but a game on steam - with achievements and all that jazz - that had these features would be really great. And if anyone decides to do that, add interval recognition, melodic dictation, rythmic dictation and dodecaphonic series dictation to make it a very thorough ear training game. Overal, if you're a beginner this will be a good start to getting your ears trained. Just make sure to pair it with interval recognition training to accelerate your ear development.

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