Download Kosmos (beta) v0.17

Current version: 0.17 (major.build). This is a test build. Expect rough edges, and please report what you find.

Platform	File	Size
Windows 64-bit	kosmos-beta-Windows.zip	539 MB
Linux 64-bit	kosmos-beta-Linux.tar.gz	534 MB

High-resolution texture pack (optional)

The downloads above use standard-resolution textures. The hi-res pack adds sharper planet maps, the Earth surface tiles, and the specular and normal maps. It is a large download, so only fetch it if you want the best-looking Earth.

File	Size
kosmos-hires.tar.gz	1.2 GB

Unpack it from inside the Kosmos folder, over the top of the base install: tar -xf kosmos-hires.tar.gz (on Windows, tar is built in to Windows 10 and later).

Release notes · Checksums: SHA256SUMS.txt

Install and run

Windows

Unzip the archive anywhere.
Run kosmos.exe in the unzipped folder.

Linux

tar xzf kosmos-beta-Linux.tar.gz
cd kosmos-beta-Linux
./kosmos

On Linux the SDL2 libraries are not bundled, so install them from your package manager if the game does not start (for example libsdl2-2.0-0 on Debian and Ubuntu). A graphics card with up-to-date OpenGL drivers is required.

Pick another start with --scenario, for example kosmos --scenario 07_mars_orbit. See the flight manual for controls and all options.

What is included

44 scenarios, nine ships and aircraft, four spaceports, and the local star catalog.
Earth, Moon and planet textures at standard resolution (hi-res pack above), with procedural terrain.
Example addons and Lua scripts to learn from (see the modders manual).

The Orbiter high-resolution terrain packs are not included. Kosmos reads them if you add them yourself; see High-resolution terrain, and the Developers manual for the sharper whole-planet maps.

Known issues

The Mercury scenario (10_mercury) crashes the probe at start.