A downloadable game for Windows, macOS, and Linux

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Ever wanted to play FTL with your friends, as a team, in a coop multiplayer run?

Well basically Tachyon is a multiplayer version of FTL.

But with it's own engine, logic, mechanics and of course some additional features - like being able to leave your ship for example.

Also the game is made to be quite a bit mod-able, so you can create your own multiplayer adventures.

You can host your own local server for a private coop game with your friends. Or you can host an MMO server to roam around hundreds of thousands of sectors with other space pilots.

Tachyon is currently a WIP, so the amount of content is going to grow.

But at the same time all releases are very stable and contain minimal amount of bugs.

Version a0.8.21 - Release notes:


  1. Added ip info to the server console /online command
  2. Music files in the playlist.dat now can be marked to have a parallel transition between ambient and battle (like in FTL)
  3. New door sounds for energy doors - (Thanks Arilou Lalee'lay)


  1.  In dialogues you can now have a player type in their reply.
    Example: <reply id="T3" text="[INPUT]Input your name." regex="^[a-zA-Z0-9 -]+$" next="Test125"/>
  2. In the modify ship event remove_system_type and remove_system_model now completely remove the system from the ship.
    In order to simply uninstall a ships system into it's cargo hold you can now use uninstall_system_type and uninstall_system_model
  3. If npc's dialogue message starts with [SKIP] then it won't be shown in the dialogue lines.
  4. If a dialogue reply text ends with [AUTO] then that dialogue reply will be selected automatically.

Bug fixes:

  1. Unable to move while in HS on-board ai ship.
  2.  Ejecting a specific system type from cargo via modify ship event was ejecting everything.
  3. Door control/shields/sensors and other system screens were broken in non default resolution.
  4. Slaver ships were not fighting back
  5. You can no longer hack a broken system

By default the game pack contains events configured to create a coop story mode universe. But several modders are working on an MMO mod. You can get more details on this on our Discord channel.


Currently a Steam version of the game is being developed with it's own and better assets and more features.

Anyone who donates >=5$ will get a free Steam key for the game once it's out. It will be sent to the E-mail address that is linked to the donation.


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Click download now to get access to the following files:

Tachyon_a051.zip 82 MB
Tachyon a0818.zip 114 MB
Tachyon a0821.zip 126 MB

Development log

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