Rimworld.v1.4.3548.zip Link

Added a Xenotype editor directly to the ideoligion creation page, making it easier to integrate custom species into your colony's belief system.

Resolved issues with "null genes" being saved in custom xenotypes and clarified various Biotech interaction strings. Why You Might See a .zip File

Added convenient build commands for swapping between standard shelves and small shelves. RimWorld.v1.4.3548.zip

Players sometimes roll back to specific builds like 1.4.3548 if a critical mod hasn't been updated for later versions like 1.5 (Anomaly) or 1.6 (Odyssey) .

RimWorld version was a specific unstable build update released by Ludeon Studios in November 2022. This patch was part of the broader 1.4 content update , which introduced massive changes like gene-modding and cross-expansion integration with the Biotech DLC . Patch Highlights: Version 1.4.3548 Added a Xenotype editor directly to the ideoligion

Since this version's release, RimWorld has advanced significantly. The current stable version as of early 2026 is , which includes the Odyssey expansion featuring exploration-themed content like gravships and new biomes.

Improved tooltips for essential precepts to clearly show growth vat speed increases. Players sometimes roll back to specific builds like 1

Are you trying to that requires this exact build? Odyssey (DLC) - RimWorld Wiki