I used to play RimWorld on a USB stick, taking it to several different PCs and dragging the saves to and from the save location was a pain. I've had this sitting around for a while and someone asked about it on reddit, so I thought I'd create a quick guide in case it helped anyone else.

The reddit post:
https://www.reddit.com/r/RimWorld/comments/b9aqgk/making_rimworld_portable/

Navigate to the root RimWorld folder, which should be '*\Steam\steamapps\common\RimWorld\', however you can find this by going to your Steam library, right clicking RimWorld, clicking 'Properties', going to the 'Local Files' tab and clicking 'Browse Local Files'.

Move the 'Rimworld' folder to your USB drive (from */steamapps/common/)

Open notepad

Paste the below command

start RimWorldWin64.exe -savedatafolder=SaveData



Click File > Save As

Choose a file name and add .bat at the end, like 'Launch.bat'

Select 'All files' in the 'Save as type' drop down

Save the file

Now put the .bat file into the root of your RimWorld folder is, where the 'RimWorldWin64.exe' file is



Launch RimWorld from your portable file using the .bat file

Now your save data should go into that file under a folder called 'SaveData', you can edit this by altering the 'SaveData' in the .bat file

Using this method will also support mods as long as you put them in the 'Mods' folder in your portable RimWorld location

To move Steam workshop mods, navigate to the file path of RimWorld's workshop file as shown below:

*\steamapps\workshop\content\294100\

Then take all of the files (should be a some random numbers) and copy them to the 'Mods' folder in your portable RimWorld folder.

NOTE - If Steam is not installed on the host PC, it should warn you that RimWorld is having trouble with the Steam API, just click ignore and it should run normally (without Steam)

Create a .bat file in the root of the portable RimWorld folder containing the following command:

start RimWorldWin64.exe -savedatafolder=SaveData