Project Rhombus is a Action, Casual, Free to Play game from SEROSOO with a 91% positive Steam review signal. Indie Lantern indexes it for players browsing by relaxing, single-player.

Game snapshot
- Developer
- SEROSOO
- Release year
- 2017
- Playtime
- Varies by player
- Price
- $0.99
- Review signal
- 91% positive
Screenshots






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
From Steam reviews
Review notes
Project Rhombus is worth a closer look if you want rhythm, high skill ceiling, and emotional story.
Best for players who want emotional story, rhythm, and high skill ceiling.
rhythm
Play styleTiming actions to music or rhythm is part of the hook.
high-skill-ceiling
FitThe game rewards practice and mastery over time.
emotional-story
ToneThe story is framed as affecting rather than just plot-heavy.
Steam review snapshots
// This is a rhythm action game where you defend the approaching arrows while playing rhythm.Fun rhythm game that is quick to pick up and very hard to master.Why it fits
Check it if you want action, casual filtered by relaxing, single-player.
Who might skip it
Research further on Steam if you need verified accessibility details, exact playtime, or current system requirements.