: You can still access this version in Steam by right-clicking the game, selecting Properties > Betas , and choosing version-1.4.3901 from the dropdown. Comprehensive DLC Overview (All 5 Expansions)

If your build ID does not appear as "143901" in the Properties screen, ensure you have disabled auto-updates (for modded play) or verify the integrity of your game files. The version string on the main menu should read 1.4.3901 rev 143901 .

Genetic engineering allows you to modify DNA to build fire-breathing super-soldiers, immortal vampires (Sanguophages), or fuzzy, cold-tolerant miners.

With this build, you can:

Lower latency when opening heavy menus like the architect tab or assigning bills to workbenches. Quality-of-Life Upgrades

Haven't even landed yet, but the world map is looking spicy .

: Version 1.4.3901 was released on November 3, 2023 . It primarily fixed translation data and Steam ID issues for the DLC.

The magic of running version 1.4.3901 with all expansions is observing how separate DLC mechanics blend naturally Version/1.4.3901 - RimWorld Wiki. Synergy Concept Combined Mechanics Gameplay Impact Royalty + Ideology

Symbiotically link pawns with dryads to harvest resources or defend your perimeter without relying on technology. 3. Biotech

: Multi-threaded optimizations in recent patches have significantly improved performance for large-scale colonies. Managing Your Version: Build 1.4.3901