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Main game area


Civitas is an empire-building game written in Javascript with the help of the jQuery library.


  • Over 80 types of buildings, each intertwined in the chain of production.
  • Custom climate zones, each with specific buildings.
  • Global market, player can trade goods with other settlements.
  • Army! Navy! Soldiers! Ships!
  • Fame system that allows your city to level up via trades, conquers and special buildings.
  • Prestige system that affects diplomacy.
  • Each city in the game world is linked via an influence system that needs to be maintained for diplomacy to work.
  • Random events that can change your diplomacy status with the other cities, give you coins or random resources.
  • Espionage, influence cities, destroy buildings, sabotage.
  • Ranking screen, where cities get ranked according to their status in the world.
  • Declare war, propose alliances and pacts, ask other settlements to join your city, propose cease fire.
  • Heroes, unique classes and items, attributes.
  • Server component, no actual data is saved externally, only in your browser's localStorage.
  • Jailer component that assures game data integrity (no cheating).
  • Any player interaction since no data is transmitted to the server component.
  • Artificial Intelligence (AI) for computer-controlled cities.


In development, Civitas is using several assets that are copyrighted by Bluebyte, so I cannot redistribute them with the game. In the future, the game will have a brand new set of graphics but for now those will be enough for testing. You can find a link to the said assets in this Gitee or this GitHub issue. All the other game resources are freely distributed under the GPLv3 license, same as the code.

1. With Docker

$ docker build -t civitas .

$ docker run --name civitas-dev -d -p 10082:80 civitas

And point your browser to http://localhost:10082.

2. Local

Choose an archive format from below, download and uncompress it. Point your browser to index.html, you don't need a game server to play.



Civitas is written by sizeof(cat) and distributed under the GPLv3 license.

This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.

This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
GNU General Public License for more details.

You should have received a copy of the GNU General Public License
along with this program.  If not, see <>.


Pull requests are always welcome!

I am always thrilled to receive pull requests, and do my best to process them as fast as possible. Not sure if that typo is worth a pull request? Do it! I will probably appreciate it.

If your pull request is not accepted on the first try, don't be discouraged! If there's a problem with the implementation, hopefully you received feedback on what to improve.

Always sign your commits and make sure you read the coding style.

Source code

Civitas is written using Javascript, has ~15000 lines of code, ~250Kb minified and can be downloaded from, or by using git to clone the repository:


git clone


git clone



The music/track1.mp3 song is named Glandula Pinealis by Shantifax.


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Civitas is an empire-building game written in Javascript with the help of the jQuery library. spread retract


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