@echo off cd /d "%~dp0" start "" RimWorldWin64.exe -savedatafolder=.\SaveData If you can’t use arguments (e.g., launching from Steam), you can create a directory junction, but that’s less portable across different PCs. Method 3: Modify the game’s config file Some players edit UnityPlayer.dll or use a wrapper – not recommended (breaks updates, anti-cheat not relevant here, but fragile).
%USERPROFILE%\AppData\LocalLow\Ludeon Studios\RimWorld\ To make the game read/write from its own folder instead: Launch with: rimworld portable
A portable version of a game means it can run directly from a USB flash drive, external SSD, or cloud folder without a traditional installation on the host PC. No registry entries are written. No files are left in %AppData% or Program Files . Saves, mods, configs, and the executable are self-contained in one folder. @echo off cd /d "%~dp0" start "" RimWorldWin64
RimWorld is an excellent candidate for portable play. Use the GOG version for a hassle-free experience, or apply the -savedatafolder trick to the Steam version. Keep it on a fast USB drive, and you can enjoy your colony on any Windows PC without leaving a trace. No registry entries are written