You must own Royalty, Ideology, and Biotech separately. If you purchase the RimWorld base game, version 1.4.3901 will run, but you will not have the xenotypes or psycasts unless the DLCs are installed.
When Ludeon Studios prepared to launch its major updates, the was preserved as a safe haven. This version represents a complete, bug-free, and hyper-stable ecosystem containing the Base Game plus the first three massive expansions: Royalty , Ideology , and Biotech . The Value of the 1.4.3901 Version
Colony 143901 did not die. It evolved . Valerius sat on a throne of bioferrite and gold, his eyes glowing with void-touch. Unit-7 stood in the courtyard, surrounded by an army of deathless mechanoids.
The 1.5 update introduces a range of subtle but powerful new systems:
: Introduced multi-stacking deep shelving units to optimize warehouse footprint sizing.
Custom belief systems, rituals, social roles, relic hunting, and specialized sub-cultures. Genetics, Children, & Mechanoids
If you are looking for a description or "text" for this specific setup—for example, for a game launcher, a collection description, or a community post—
The free Update 1.5 is a massive content drop on its own, packed with quality-of-life improvements and new features that fundamentally improve the base game, regardless of which DLCs you own.
A new endgame path allows you to interact with a terrifying machine intelligence that threatens to consume the world. Biotech and Ideology: Enhanced Synergy
Experience the ultimate sci-fi colony sim with . This is the full, uncompromised package – build 143901 – featuring every official expansion and all major updates. Start fresh with a stable, fully patched version ready for modding or vanilla mastery.
Adds dark-entity research, reality-bending monoliths, and terrifying flesh-beasts to hunt down.
If you are downloading a repack or verifying your game files for "143901 all DLCs," you are looking for this specific stability sweet spot.
To conquer the Rim on Build 143901, your success will come down to careful planning, maintaining your colonists' moods, and tactical defense planning. Whether you're trying to build a serene utopian republic or a brutal transhumanist empire, the story is entirely in your hands.
