Single-player games like Project Rhombus
Below are 12 single-player Steam games similar to Project Rhombus, ranked by player overlap. Every pick carries Steam's Single-player category, so multiplayer-only titles or always-online games don't sneak in. imho.run pulls the category data from Steam directly — Single-player here matches what the store labels.
Want the full alternatives list (paid + free + Steam Deck + cheaper picks)? See the parent games like Project Rhombus page.
Ranked picks
- 1
SOMOS
Single-player alternative to Project Rhombus — playable solo, no multiplayer required. Shares Action and Indie with Project Rhombus.
SOMOS is an action-arcade game with minimalist visuals, where movement is key to solving procedurally generated, living puzzles
- 2
Soundodger+
Single-player alternative to Project Rhombus — playable solo, no multiplayer required. Shares Action and Indie with Project Rhombus.
Dodge the music and dance through a mesmerizing ballet of choreographed bullets, each synced to music from over a dozen international artists. Push your creativity and skills with the fully-featured Level Editor and never run out of things to dodge.
- 3
Super Hexagon
Single-player alternative to Project Rhombus — playable solo, no multiplayer required. Shares Action and Indie with Project Rhombus.
Super Hexagon is a minimal action game by Terry Cavanagh, with music by Chipzel.
- 4
140
Single-player alternative to Project Rhombus — playable solo, no multiplayer required. Shares Action and Indie with Project Rhombus.
140 is a challenging minimalistic platformer with abstract colorful graphics. Rhythmic awareness is required to overcome obstacles controlled by an energetic, yet melancholic electronic soundtrack.
- 5
Beatblock
Single-player alternative to Project Rhombus — playable solo, no multiplayer required. Shares Action and Indie with Project Rhombus.
THE BEAT REVOLVES AROUND YOU in Beatblock, the headspinning rhythm-action game! Move your paddle and block to the beat in simple yet deviously bombastic levels, each complete with their own unique theming and visuals.
- 6
SATANIC PANIC 666
Single-player alternative to Project Rhombus — playable solo, no multiplayer required. Shares Action and Indie with Project Rhombus.
Descend into hell and destroy the cursed tapes with occult music known as †HEAVY METAL† to save our children's souls. On your way you will face Satan himself.
- 7
Spin Rhythm XD
Single-player alternative to Project Rhombus — playable solo, no multiplayer required. Shares Action and Indie with Project Rhombus.
Enter the Rhythm Dimension. A homage to classic arcade rhythm games (Guitar Hero, DDR), with a modern aesthetic and soundtrack. Match colours and beats, spin, tap, flick and flow through the juiciest beats in the universe. Supports multiple control styles including MIDI DJ gear on Steam!
- 8
NERVE
Single-player alternative to Project Rhombus — playable solo, no multiplayer required. Shares Action and Indie with Project Rhombus.
Hurtle through beautiful unforgiving worlds, where every frame is enthralling, every moment is exhilarating, every death is deserved, and every success is earned. RACE | DODGE | DIE | REPEAT
- 9
Undertale
Single-player alternative to Project Rhombus — playable solo, no multiplayer required. Shares Indie with Project Rhombus.
UNDERTALE! The RPG game where you don't have to destroy anyone.
- 10
Geometry Dash
Single-player alternative to Project Rhombus — playable solo, no multiplayer required. Shares Action and Indie with Project Rhombus.
Jump and fly your way through danger in this rhythm-based action platformer!
- 11
Soundodger 2
Single-player alternative to Project Rhombus — playable solo, no multiplayer required. Shares Action and Indie with Project Rhombus.
Dodge the music and weave through an endless ballet of bullets in an all-new collection of hand-crafted levels set to the music of an award-winning cast of international musicians. Turn any song into an amazing experience with the robust Level Editor and never run out of things to dodge.
- 12
Deneb: Across the Stars
Single-player alternative to Project Rhombus — playable solo, no multiplayer required. Shares Action and Indie with Project Rhombus.
“Deneb: Across the Stars” is a mouse only, top-down, hardcore-platformer. Astronaut Vega crosses the stars to find her lost colleague Altair and save the dogs. Move carefully. A single mistake can lead to an endless fall.