# String Theory

Summer DB entity ID: 21544ca7\-bfe9\-4539\-9972\-6a05e1cb1185

Steam App ID: 402150

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\.

## Game information

- Type: game

- Developer: Zenisport

- Publisher: Zenisport

- Release date: Feb 17, 2016

- Coming soon: false

- Free to play: false

- Parent Steam app: Not collected

- Genres: Casual

- Categories: Single\-player, Steam Achievements, Steam Trading Cards, Steam Leaderboards, Family Sharing

- Platforms: windows

- Website: Not collected

- Screenshots: https://shared\.akamai\.steamstatic\.com/store\_item\_assets/steam/apps/402150/ss\_708a413aa3c185236b75840d10e5fc6115d55ade\.1920x1080\.jpg?t=1466368288, https://shared\.akamai\.steamstatic\.com/store\_item\_assets/steam/apps/402150/ss\_60922a4a43e0fe3ef36ffcc649651ca19113a76d\.1920x1080\.jpg?t=1466368288, https://shared\.akamai\.steamstatic\.com/store\_item\_assets/steam/apps/402150/ss\_38c46f72108ff4a031599b1183d72a8aae081e64\.1920x1080\.jpg?t=1466368288, https://shared\.akamai\.steamstatic\.com/store\_item\_assets/steam/apps/402150/ss\_31f0b6055feb74c8651785c65085221f8fe3d15b\.1920x1080\.jpg?t=1466368288, https://shared\.akamai\.steamstatic\.com/store\_item\_assets/steam/apps/402150/ss\_9b2526897ff891459288327dc9088cfd472cad01\.1920x1080\.jpg?t=1466368288

- Price: 899 minor units USD; discount 0%

- Price country: US

## Observed metrics

- Current players: 0

- Steam review count: 53

- Steam positive reviews: 40

- Steam negative reviews: 13

- Steam positive percentage: 75.47169811320755%

- Summer DB rating: No native votes

Review filters: \{"language":"all","review\_type":"all","purchase\_type":"all","filter\_offtopic\_activity":0\}

## Player history

[Seven-day chart data as Markdown](/api/v1/entities/21544ca7-bfe9-4539-9972-6a05e1cb1185/player-metrics?days=7&format=markdown) · [JSON](/api/v1/entities/21544ca7-bfe9-4539-9972-6a05e1cb1185/player-metrics?days=7)

Chart values are hourly observed maxima. The sampled 24-hour peak and missing intervals carry explicit coverage; history before collection is unknown.

## Sources and freshness

- Catalog membership: store\_catalog

- Catalog observed: 2026\-09\-28T16:58:32\.455488\+00:00

- Details observed: 2026\-09\-22T06:48:18\.167247\+00:00

- Player count observed: 2026\-09\-22T06:48:19\.48824\+00:00

- Reviews observed: 2026\-09\-22T06:48:19\.152194\+00:00

Full provenance: \{"urls":\{"price":"https://store\.steampowered\.com/app/402150/","catalog":"https://api\.steampowered\.com/IStoreService/GetAppList/v1/","details":"https://store\.steampowered\.com/app/402150/","players":"https://api\.steampowered\.com/ISteamUserStats/GetNumberOfCurrentPlayers/v1/?appid=402150","reviews":"https://store\.steampowered\.com/appreviews/402150"\},"price":"2026\-09\-22T06:48:18\.167247\+00:00","source":"steam","catalog":"2026\-09\-28T16:58:32\.455488\+00:00","country":"US","details":"2026\-09\-22T06:48:18\.167247\+00:00","players":"2026\-09\-22T06:48:19\.48824\+00:00","reviews":"2026\-09\-22T06:48:19\.152194\+00:00","language":"en","editorial":null,"membership":"store\_catalog","observations":\{"price":"5865ef2b\-d0cc\-443a\-abd9\-f19ebd5e060f","catalog":"012e474d\-dcf4\-42dc\-87f0\-bf63a9c7f6e3","details":"5f3f7b38\-dc83\-4fd2\-8585\-0f56a5e30fa5","players":"c0a77bc7\-9c87\-401a\-8faf\-b8b9059f085a","reviews":"d6fcd138\-cea0\-4cee\-bcd8\-befb2ab049ed"\},"reviewFilters":\{"language":"all","review\_type":"all","purchase\_type":"all","filter\_offtopic\_activity":0\}\}

Native rating methodology: \{"count":0,"average":null,"entityId":"21544ca7\-bfe9\-4539\-9972\-6a05e1cb1185","revision":0,"observedAt":null,"methodology":"arithmetic\-v1","distribution":\[0,0,0,0,0,0,0,0,0,0\]\}

Steam reviews are not Summer DB votes. Missing data is not zero. Player counts are observations, not historical peaks. A supplemental record does not establish that a game was delisted.

[Steam store](https://store.steampowered.com/app/402150/) · [JSON](/api/v1/games/21544ca7-bfe9-4539-9972-6a05e1cb1185)