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Project Rhombus
Project Rhombus is a rhythm-based casual action game that combines exciting electronic music with stylish flat design. Hold on as long as possible, blocking the oncoming arrows moving to the beat.
What players say
Steam review score and the most-helpful voices, which may include critical ones. Data as of 2026-05-20.
“One of my favorite rhythm games so far!”
— a player, Steam review · 11 hrs played“I just got a nonstop non streak in expert from the first note up to 21 seconds in. I hit it, and then immediately failed at the second note after the break. 10/10”
— a player, Steam review · 56 hrs played“psychological horror game”
— a player, Steam review · 2 hrs playedAchievement stats
Global completion rates across all Steam players — a data view of how far people actually get. Source: Steam official stats · as of 2026-07-25.
Price tracking
US-region pricing (USD), sampled twice daily by our own tracker since 2026-07-11. Steam prices vary by region — always confirm your local price on Steam.
Regional prices at last sample, in local currency — Steam sets each region's price independently.
Cheapest → most expensive, converted to USD at ECB reference rates (2026-07-24). Relative comparison only.
Latest official news
Developer announcements via the Steam news API — links go to the original posts. More across all games on the news hub.
Policy Changes For Free Games
https://steamcdn-a.akamaihd.net/steamcommunity/public/images/clans/6188768/04e01f130a8599d0f70684fc6a79f864b017f9a3.png Greetings from PsychoFlux Entertainment! We're going to talk about the change of
Steam Achievements & Store Page Update (July 11, 2018)
Steam Achievements To test the Steam Achievements feature, we've added some of them to the game. The added achievements are: Easy 60" Score the record of 60 sec. on Easy difficulty Normal 60" Score th
Update Dec. 15th, 2017
System Progress saves We changed the method saving the game progress. Now your progress data will be stored in *.sav files instead of old *.dat files. If you launch the game after the update, the game
Update Dec. 15th, 2017
System Progress saves We changed the method saving the game progress. Now your progress data will be stored in *.sav files instead of old *.dat files. If you launch the game after the update, the game
Update Dec. 13th, 2017
Before we start; we found that the recent "line 41" error was caused by the corruption of the file which contains your configuration data. From now on, please make sure you don't turn off the Steam cl
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Screenshots
Official Steam store screenshots — click any shot to enlarge.
Facts & details
From the Steam store record, snapshot 2026-05-20.
| Genres | Action, Casual, Indie, Free To Play |
| Player tags | Free to Play · Indie · Rhythm · Casual · Action · Music · Difficult · Great Soundtrack · 2D · Arcade · Abstract · Controller (SteamSpy community voting) |
| Features | Single-player · Steam Achievements · Full controller support · Custom Volume Controls · Steam Cloud · Family Sharing |
| Languages | English |
| Controller | Full support |
| Achievements | 4 |
| Estimated owners | 100,000 – 200,000 (SteamSpy) |
Minimum system requirements (PC)
Minimum: OS *: Windows Vista / 7 Processor: 1 GHz 32-bit or 64-bit processor Memory: 1 GB RAM Graphics: CPU-integrated or on-board graphics DirectX: Version 11 Storage: 120 MB available space Sound Card: DirectX-compatible sound card