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) .

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

This particular build focused on refining new features introduced in the 1.4 cycle: RimWorld.v1.4.3548.zip

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.

Added convenient build commands for swapping between standard shelves and small shelves. Players sometimes roll back to specific builds like 1

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

Steam users can access older versions via the Betas tab in game properties, but manual ZIP backups are common for players who want to ensure their highly modded save files never break. Moving Forward The current stable version as of early 2026

Improved tooltips for essential precepts to clearly show growth vat speed increases.