A downloadable game for Windows

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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.


  • Music with sensual beat
  • Minimalistic graphics
  • Easy to learn, quite hard to master
  • 100% free!

in honor of Toby Fox

Developed by team SEROSOO

Also available on Steam:

Release date Jun 03, 2017
Rated 5.0 out of 5 stars
AuthorPsychoFlux Entertainment
GenreAction, Rhythm
Made withGameMaker: Studio
Tags2D, Abstract, Colorful, Difficult, GameMaker, Minimalist, Music, psychedelic, Singleplayer
Average sessionA few minutes
InputsKeyboard, Xbox controller, Gamepad (any)


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Click download now to get access to the following files:

Project Rhombus 119 MB


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Looks lovely and nice music! 

Sadly, I could barely get going :( It appeared that the audio/video timing was off, as it seemed like the middle box was not pulsing in sync with the audio. I know, I know, I might be terrible-- but it's hard to tell when I just die over and over on the first beat or two of the song. It would be awesome to have a video/audio sync setup, so I can tweak latency if needed. 

Another nice feature could be to have a training / can't die mode that provides some feedback a la DDR ("Perfect!" and "Almost")

Thanks for making and sharing!

Reaaally really cool game ! I love it ! Here is why :

The game in itself is beautiful and the controls are easy to understand. The game has 4 different difficulties at the moment and has vibrant graphics. When playing there are 2 different types of arrows, and they can come slow or fast.

But :

The game is quickly finished as it lacks of content (the easiest way to change that would be by adding the possibility to create levels (I'd love to do that <3) or skinning the game) Also, would be interesting if there were more types of arrows (accelerating, going in a random direction or switching approach line clockwise) .

Yet this game is probably in my top 5 of rhythm games, even if it has a short lifetime.