Single-player games like Cosmic Composer
Below are 8 single-player Steam games similar to Cosmic Composer, 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 Cosmic Composer page.
Ranked picks
- 1
Void Cargo: Equilibrium
Single-player alternative to Cosmic Composer — playable solo, no multiplayer required.
A first-person sci-fi cargo flight sim. Pilot a physics-driven lander, plan risky routes, manage fuel and heavy cargo, and save deliveries by repairing system failures mid-flight. Earn credits and upgrade your ship.
- 2
Space Worthy
Single-player alternative to Cosmic Composer — playable solo, no multiplayer required.
Space Worthy is a survival game focused on building spaceships. You start on a primitive planet, with acient technology, and craft your way into stars! Dig in the ground, smelt metals, build machines, houses, vehicles and spaceships!
- 3
Unbox the Room 2
Single-player alternative to Cosmic Composer — playable solo, no multiplayer required. Shares Casual with Cosmic Composer.
The cozy unboxing and interior design experience returns — bigger, warmer, and more reactive. From homes to small businesses, each space responds to your choices and reflects its owner’s personality.
- 4
Starlight Explorers
Single-player alternative to Cosmic Composer — playable solo, no multiplayer required. Shares Casual with Cosmic Composer.
Master physics in one compelling physics puzzle after another. Aim the launcher and adjust its power, using your understanding of gravity wells to correctly plot their courses in a variety of challenges. Complete a light-hearted story and then test yourself in the endless Expeditions mode.
- 5
SpaceEngine
Single-player alternative to Cosmic Composer — playable solo, no multiplayer required. Shares Casual with Cosmic Composer.
The world's first science-based photorealistic interactive 3D planetarium that models the entire Universe, using procedural generation for uncharted areas.
- 6
FlatPackers
Single-player alternative to Cosmic Composer — playable solo, no multiplayer required. Shares Casual with Cosmic Composer.
CHAOTIC CO-OP BUILDING - Mistakes will be Made! Build flatpack furniture alone or with friends from simply a picture of the final piece so you must work out how everything fits together, which tools to use and with no object snapping, players need skill and practice to perfect their building skills.
- 7
OmOchim
Single-player alternative to Cosmic Composer — playable solo, no multiplayer required.
Build machines, contraptions and playgrounds out of everyday objects in a physics sandbox driven by visual programming. Overcome obstacles, save the city, create worlds. Every goal has a dozen answers. Every crash, collapse and explosion is just the next idea.
- 8
Celestial Golf
Single-player alternative to Cosmic Composer — playable solo, no multiplayer required.
It’s 2D golf on an astronomical scale. Bite-sized missions will teach you the techniques of real space flight, without having to worry about fuel or crew. Precisely plan orbital trajectories over the moons of Mars, through the rings of Saturn, and boldly go where no golf ball has gone before.