Cosmos
Journeyer

An entire universe in your browser. Seamlessly explore star systems in your spaceship, by rover, or on foot.

100%Free and
open source

0Loading screens
between worlds

Procedural
worlds

An astronaut observing a luminous anomaly from the surface of a moon
01

Land and explore

Fly from space to a planet's surface, then explore on foot or by rover.

The three-dimensional star map of Cosmos Journeyer
02

Navigate the galaxy

Use the 3D star map to inspect nearby systems and plan your route.

A black hole surrounded by a bright accretion disk
03

Discover celestial objects

Visit planets, moons, stars, black holes, anomalies and space stations.

What comes
next.

A rotating space station illuminated by a nearby star01

In development

Visual overhaul

Improve and optimize the game's visuals. Add SSR and SSAO.

A spacecraft flying above an icy planet in front of a star02

Planned

Universal input system

Rework the input system to support gamepads and fully rebindable controls.

A rover traveling across the surface of a moon03

Planned

Handcrafted stories

Meet memorable characters and travel with them across the cosmos.

Free and
open source.

Cosmos Journeyer is licensed under the AGPL. Its source code, issue tracker and development history are public on GitHub.

What is Cosmos Journeyer?

Cosmos Journeyer is a free, open-source space exploration game. It runs in the browser and is also available as a desktop application.

How can I contribute?

Report bugs, suggest features or contribute code on GitHub.

Share screenshots and feedback on Reddit.

Fund development through Patreon or GitHub Sponsors.

How can I get in touch?

Post on Reddit or send an email.