: Extract the .zip contents to a folder. This version is often used for stability in long-running modded playthroughs before the jump to version 1.5.
: Massive content additions that feel like official DLC. File: RimWorld.v1.4.3613.Incl.ALL.DLC.zip ...
Depending on whether you are looking to set up this specific version or develop new content for it, here is how to proceed: Setting Up the Environment : Extract the