How to run your own Moonlapse server [Debian/Ubuntu]

17 Aug 2020 - saltytaro

Interested in playing by your own rules? You can download the code to run your very own MoonlapseMUD server.

To follow along with this tutorial, you will need a machine running an operating system with access to Advanced Package Tool (or APT).


  1. Firstly you will need Python 3.6 which should be installed by default on most Debian-based systems.
  2. Update the package list using the following command:

    sudo apt update
  3. Install PIP, the Package Installer for Python, which is what we will use to obtain the rest of our prerequisite Python libraries\

    sudo apt install python3-pip
  4. Install the PostgreSQL, the database server the game will need to read from and write to.

    sudo apt install postgresql
  5. Next, the drivers required to let Python and PostgreSQL talk to each other.

    sudo apt install python3-psycopg2
    sudo apt install libpq-dev
    sudo pip3 install psycopg2
    • Note for Mac users, you can instead run the following command (assuming you have homebrew installed):\

       brew install postgresql
       sudo pip3 install psycopg2

      If you get a C compilation error such as library not found for -lssl then run this command and try the pip3 install again.

      export LIBRARY_PATH=$LIBRARY_PATH:/usr/local/opt/openssl/lib/
  6. Install git and clone the MoonlapseMUD source from the current repository

    sudo apt install git
    git clone
  7. Set a password for the operating system user postgres, which is created when you install postgresql by default. This will be used to create your database.\

    sudo -u postgres psql postgres
    \password postgres

    You’ll see:

    Enter new password:
    Enter it again:
  8. From your terminal, create a new user to run the Moonlapse database and create the new database itself.\

    su - postgres
    createuser --interactive --pwprompt
    Enter name of role to add: MoonlapseAdmin
    Enter password for new role:
    Enter it again:
    Shall the new role be a superuser? (y/n) y
    createdb Moonlapse
  9. When you’re running psql as the postgres user, create the database required for the game. Then run the script you downloaded earlier to create the structure for the game database.

    psql Moonlapse
    \i Moonlapse.sql
  10. Create the database connection string and place it in the MoonlapseMUD/server directory.\ MoonlapseMUD/server/connectionstrings.json
"user": "MoonlapseAdmin",
"password": "myPassword",
"host": "localhost",
"port": "5432",
"database": "Moonlapse"
  1. python3 MoonlapseMUD/server