How to Download COSMONAUT

1. Click on the COSMONAUT download button below.
2. Choose "Install" to install the game on the windows steam client.
3. Follow the on-screen prompts
4. Let it download the Full Version.
5. Once a game is downloaded, use the Windows Steam Client to play the game.

=== Download Game ====

Download for pc →

This guide describes how to use Steam Proton to play and run Windows games on your Linux computer. Some games may not work or may break because Steam Proton is still at a very early stage.

1. Activating Steam Proton for Linux:
Proton is integrated into the Steam Client with "Steam Play." To activate proton, go into your steam client and click on Steam in the upper right corner. Then click on settings to open a new window. From here, click on the Steam Play button at the bottom of the panel. Click "Enable Steam Play for Supported Titles."

Alternatively: Go to Steam > Settings > Steam Play and turn on the "Enable Steam Play for Supported Titles" option.

Valve has tested and fixed some Steam titles and you will now be able to play most of them. However, if you want to go further and play titles that even Valve hasn't tested, toggle the "Enable Steam Play for all titles" option.

2. Choose a version
You should use the Steam Proton version recommended by Steam: 3.7-8. This is the most stable version of Steam Proton at the moment.

3. Restart your Steam
After you have successfully activated Steam Proton, click "OK" and Steam will ask you to restart it for the changes to take effect. Restart it. Your computer will now play all of steam's whitelisted games seamlessly.

4. Launch Stardew Valley on Linux:
Before you can use Steam Proton, you must first download the Stardew Valley Windows game from Steam. When you download Stardew Valley for the first time, you will notice that the download size is slightly larger than the size of the game.
This happens because Steam will download your chosen Steam Proton version with this game as well. After the download is complete, simply click the "Play" button.

Windows Pc Requirements

Minimum:

• OS: Microsoft Windows XP / Vista / 7 / 8
  
• Processor: 1.2GHz processor
  
• Memory: 512 MB RAM
  
• Graphics: DirectX 8-compatible graphics card with at least 32MB of video memory
  
• DirectX: Version 9.0c
  
• Storage: 250 MB available space
  
• Additional Notes: Microsoft Xbox 360 Controller or Direct Input compatible controller

Recommended:

• OS: Microsoft Windows XP / Vista / 7 / 8
  
• Processor: 1.4GHz processor
  
• Memory: 1 GB RAM
  
• Graphics: DirectX 8-compatible graphics card with at least 32MB of video memory
  
• DirectX: Version 9.0c
  
• Storage: 250 MB available space
  
• Additional Notes: Microsoft Xbox 360 Controller or Direct Input compatible controller

Linux Requirements

No minimum requirements!!
No maximum requirements!!

Mac Requirements

No minimum requirements!!
No maximum requirements!!

Unravel the mystery surrounding the lost vessel Diogenes. A story-driven retro platformer with elements of horror. Use the zero-g suit to explore the eerie corridors of a derelict ship filled with unknown lifeforms and dark secrets.

COSMONAUT is an immersive story-driven horror platformer set two centuries in our future. Suit up as Jarobi, a green DSR (deep space reconnaissance) contractor tasked with boarding the S-class research vessel, Diogenes. Lost 80 years prior in the vast Kuiper Belt, the vessel has become an iconic symbol of humanity's early manned voyages to the outer solar system. The ship is for the taking, but at what cost?

Creatively explore a decrepit futuristic environment via unique movement mechanics, free from gravity using any surface you choose. Survive the dangers of deep space habitation through various puzzles and challenges. Arm yourself and choose to merely defend against, or fully exterminate foes of both extraterrestrial and artificial origin. Put your psychological resolve to the test and become the first to unravel the mysteries surrounding the lost Diogenes vessel.

“It fuses it’s retro presentation with modern horror sensibilities to great effect, managing to create an unbearably eerie and tense gaming experience that I never thought possible considering it’s graphical limitations.”
Highly Recommended – Lou's Reviews

“It’s livened up by the way you get around, which is like a 2D version of Dead Space – a quick tap of the spacebar launches you directly upwards, and automatically rotates you round to reorient yourself upright on the ‘ceiling’. It’s a simple thing but brings the setting to life, and is mildly fun to do. It’s also a useful tool for avoiding and tricking the nasties that your arrival draws out. Of course something terrible happened on board, and you have to figure out what by reading diaries and logs, and questioning the half-helpful, half-suspicious ship AI. While this is obvious to us, the characters can’t really know until they’re on board, and this is where Cosmonaut excels.”
Unknown Pleasure – RockPaperShotgun