Change the climate of an entire planet in an existing Rimworld save. Useful if you've been playing for a while, and regret setting the temperature offset to something rather extreme.

• Python 3. I used Python 3.13.
• An existing save file for Rimworld 1.6

1. Download the script. You can do this by:

   • either downloading a zip of the code by clicking this link.
   • or cloning the repo with git:

     git clone https://github.com/fwdekker/rimworld-change-climate.git
     

2. Tell the script which save it should edit. You can do this by:

   • either copying your save into the directory where change-climate.py is and renaming your save to old.rws,
   • or editing change-climate.py and setting old_path = r"..." to be the full path to where your save file is, for example:

     old_path = r"%USERPROFILE%\Appdata\LocalLow\Ludeon Studios\RimWorld by Ludeon Studios\Saves\My Cool Save.rws"

     (The r" is not a mistake.)

   In case you didn't know, you can find your save file in the following directory, depending on your operating system:

   • Windows: %USERPROFILE%\Appdata\LocalLow\Ludeon Studios\RimWorld by Ludeon Studios\Saves\
   • Linux: ~/.config/unity3d/Ludeon Studios/RimWorld by Ludeon Studios/Saves/
   • macOS: ~/Library/Application Support/RimWorld/

3. Tell the script how much the global temperature should change. You can do this by editing change-climate.py and setting increase = .... This value represents the increase in temperature in degrees Celsius.

4. On a command line, navigate to the directory containing change-climate.py, and then run

   python3 change-climate.py

5. Pray that the script says Done!.

6. Move the new edited save file into the Rimworld save directory.
   Find the file old.rws in the same directory as change-climate.py, and move it into your save file directory.