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About the developer

160 Stars 108 Forks GNU General Public License v3.0 5.8K Commits 187 Opened issues


Terraforming Mars Boardgame

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Contributors list

Terraforming Mars Open-source


This is an open-source online implementation of the great board game Terraforming mars. It is not affiliated with FryxGames, Asmodee Digital or Steam in any way.

Buy The Board Game

The board game is great and this repository highly recommends purchasing it for personal use.

⬤ I want to join the community!

Join us over on Discord!.

⬤ I want to play!

There's a demo instance at It's generally reliable, but read more below.

There's also this excellent YouTube playlist focused on tutorials custom for this app.

NOTE: This demo site is restarted daily. A multiplayer game will remain available for 10 days, after which it will be flushed from the database. Unfinished solo games are flushed after one day. We continue to make stability and scalability improvements as in step with growth and popularity, but to make sure your game remains, we highly recommended to host your own web server.

⬤ I want to learn how to play

There are far too many good tutorials online.

⬤ I want to run a copy of the server locally

Check out our Local setup wiki page

Honestly, it's really simple.

⬤ I want to run a copy of the server on Heroku

Check out our Heroku setup wiki page

(Good choice. A free Heroku account will satisfy most needs, and will take five minutes to set up. This is our preferred recommendation for online hosting.)

⬤ I want to run a copy of the server on Docker

Check out our Docker setup wiki page

⬤ I want to report a bug or feature request

Add it to our issues tab.

⬤ I want to win!

Me too, pal. Me too.

✨ Contributors ✨

Thanks goes to these wonderful people:

Brian Folts: All the things
Vincent Moreau: Venus, Prelude, Hellas & Elysium, Colonies, Turmoil
alrusdi: Front End
Simeon Simeonov: UX, cards and Colonies design
Pierre Hilbert: Turmoil and helps with the things
nwai90: Community and Political Agendas fan-made expansions, and helps with the things
Pocc: He did that one thing one time
Robert Konigsberg: Ares fan expansion, The Moon fan expansion, infrastructure cleanup, code reviews, two opinions too many.
chosta: Front end and back end

Lynesth: Help with the things



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