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Get Started

Simplest approach: We'll walk you through how to get started developing with the Godot app and plug into the Mirror Official server (our deployed mirror-web-server). This gives you access to your full accounts, assets, Spaces, etc. In The Mirror (our web app). With it, you can start developing without needing to run the full stack locally.

  1. Git clone the repository: git clone (you do not need to clone with submodules; they are optional)
  2. Download the precompiled Mirror fork of Godot engine (required to use)
  • Windows: Download
  • Mac: Download Note: very buggy; taking contributions for fixes :) On Mac you will see a zip file; extract it and open the editor binary with CMD + Right-Click then select the Open option.
  • Linux: Download
  1. Open the Godot editor (The Mirror fork you downloaded in step 2), click import, and choose the project.godot from the /mirror-godot-app folder.
  2. Hit play once it loads!

Docker Approach


You don't need Docker if you're only running mirror-godot-app locally. You can still hit our deployed Mirror Official server instance via the top-right environment dropdown (select official; see pic below) and login with your Mirror account to manage assets, saved data, etc. The Docker approach is for running the full stack yourself (including mirror-web-server locally, not just the mirror-godot-app).

Official env

Docker isn't required, but is recommended for ease to run the web server and other dependencies in a consistent environment across different hardware.

How to Run the Full Stack with Docker (Windows)

  1. Install Docker for Windows and git bash, which comes with git or WSL (git bash is easier)

Download and proceed with instructions from: Setup was tested with WSL2 (defualt for not Professional versions of Windows)

  1. Clone the main repo: git clone

  2. Configure your ./mirror-web-server/.env by duplicating your .env.example file and renaming it to .env. Use the defaults where needed and plug in your own env variables where necessary.

  3. Create a new Firebase project and download your service account JSON file and replace the contents of file /mirror-web-server/firebase-creds-example.json with the contents of the downloaded file , which will plug the mirror-web-server into your own Firebase instance. This is required if you're running mirror-web-server locally since mirror-web-server requires admin permissions.

  4. From git bash or WSL, from YOUR_PROJECT_DIR/mirror-web-server/, run docker compose up


If you run into an error like this: ERROR: for the_mirror_server Cannot start service mirror-server: failed to create shim task: OCI runtime create failed: runc create failed: unable to start container process: exec: "./": permission denied: unknown

Try running chmod +x from the mirror-web-server directory.

  1. Use your godot-app with local preset in top right corner of Godot editor.

  2. Localhost Space should load with terrain and environment


1. I messed up & I can't login

Probably issue with mirror-server configuration files Remember to run docker compose build after every change to the .env configs! The updates to .env won't apply otherwise.

2. My localhost space is empty (not even a terrrain and environment)

Something went wrong with your migration of DB. After fixes to your dump file, make sure to remove the container running mongodb (otherwise init script restoring dump will not launch)

3. My database is not empty even though it should be.

Your mongo container maybe stopped but it is not removed. Try docker rm mongo_container_id. If this does not help try docker system prune


Connection String for MongoDB Compass (the GUI for MongoDB):


Download MongoDB Compass here.

Creating a New Dump of the Database

  1. Find container ID for Mongo:

docker ps

  1. Enter the container bash:

docker exec -it CONATAINER_ID /bin/bash

  1. Inside container:

cd / && mongordump --uri="mongodb://root:example@localhost:27017/themirror?retryWrites=true&w=majority&authSource=admin" -d themirror --archive=/database_dump/dump.archive

  1. Now we have a dump but it's inside a container. Run in other WSL shell:

docker cp CONTAINER_ID:dump.archive .

Your dump should be in current dir called dump.archive

  1. Connecting to different localhost space in godot-app

In the main folder of godot-app find project.godot and edit:


run/main_run_args="%command% --server --space NEW_SPACE_ID --mode edit --uuid localhost"

You can also edit it using godot editor. Go to Project -> Project Settings . Enable Advanced Settings Checkbox. Go to Editor -> Run Category and change Space ID in Main Run Args field.