Checkpoint64 has a preset for RimWorld: it already knows where the save folder is, backs it up automatically and keeps every version. Everything this site has on RimWorld:
RimWorld
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Save file location
Windows:
%USERPROFILE%\AppData\LocalLow\Ludeon Studios\RimWorld by Ludeon Studios\Saves
macOS:~/Library/Application Support/RimWorld/Saves
Linux:~/.config/unity3d/Ludeon Studios/RimWorld by Ludeon Studios/Saves -
Backup guide
A RimWorld save records the mod list that built the colony, so removing or updating a mod mid-run can leave a save that won't load. Checkpoint64 keeps every version of the Saves folder, so a broken load order or a dead colony is one click from undone. Free download.
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Launch options
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