File: Rimworld.v1.4.3613.incl.all.dlc.zip ... Access

: Since this is version 1.4, you must use mods specifically tagged for 1.4. You can find these on the RimWorld Steam Workshop by filtering for that version, or on Nexus Mods . Developing New Features (Modding)

If you are looking for "must-have" features to add via existing mods for this build, consider: File: RimWorld.v1.4.3613.Incl.ALL.DLC.zip ...

: A performance mod essential for maintaining high TPS (Ticks Per Second) in the late game. : Since this is version 1

If you are trying to "develop" or add features to this specific build: : Since this is version 1.4

: Ensure the folders for Royalty , Ideology , and Biotech are present in the Data directory. You can verify their status in the Mods menu within the game's main screen.