Rimworld 143901 All Dlcs New May 2026
In the sprawling universe of colony simulation games, few titles command the reverence and addictive loyalty of Ludeon Studios’ RimWorld. For the uninitiated, it’s a story generator about crash-landed survivors trying to build a home on a hostile frontier. For the veterans, it’s a complex tapestry of human psychology, logistics, and tragedy.
Recently, a specific version number has been circulating in forums, modding communities, and digital storefronts: RimWorld 1.4.3901. If you are searching for this exact build—often labeled as “RimWorld 143901 all DLCs new” —you are likely looking for the definitive, most stable, feature-complete version of the game available today.
This article breaks down exactly what version 1.4.3901 includes, how it integrates all three major expansions (Royalty, Ideology, and Biotech), and what “new” elements seasoned players need to know before launching their next colony.
Note: this section summarizes the kinds of fixes and polish applied across DLC content in 1.4.3901 rather than adding new DLC content.
RimWorld has entered an expansive new era in 2026, building upon the massive foundation laid by its recent major updates. Whether you are returning after a hiatus or looking to complete your collection, the combination of Version 1.5, Update 1.6, and the latest Odyssey DLC has transformed the "story generator" into a multi-layered masterpiece. The Latest Version: RimWorld 1.6 and "Odyssey"
As of mid-2026, the game has evolved significantly. While the 1.5 update (released in 2024) brought "quality of life" features like wall lamps and crawling mechanics, the 1.6 Update and its accompanying Odyssey DLC have redefined the late-game experience.
Spacefaring Colonies: The Odyssey DLC (released July 11, 2025) allows players to finally break the atmosphere in a meaningful way. You can now build and pilot Gravships to travel between landmarks, establish orbital outposts, and encounter over 40 new space-faring animals.
Expanded Biomes: New planetary and orbital biomes have been added, providing fresh challenges for seasoned survivors. The Core DLC Collection rimworld 143901 all dlcs new
To get the "All DLC" experience, you now need five major expansions, often referred to by the community using the "RIBORN" or "RIBOA" acronyms (based on their initials):
Royalty: Introduces the Empire, psychic powers (psycasts), and high-tech weaponry.
Ideology: Adds belief systems, allowing you to run anything from a group of "blind tunnel-dwellers" to a "cannibalistic drug-cult".
Biotech: The massive 2022 expansion that added mechanitor controls, genetic engineering (xenotypes), and the ability to raise children.
Anomaly: Released in April 2024, this horror-themed DLC introduces cosmic horrors, containment facilities for studying dark entities, and reality-bending threats.
Odyssey: The newest 2025 expansion focused on exploration, ships, and interstellar travel. Key Features of Update 1.5 and 1.6
If you haven't played since the 1.4 era, several "base game" features will surprise you: In the sprawling universe of colony simulation games,
Crawling: Wounded colonists and enemies now crawl while downed, leaving trails of blood.
Books and Libraries: Colonists can now read books to gain experience and research.
Search Function: A new magnifying glass icon allows you to quickly find items or enemies on your map.
Performance Upgrades: Multi-threaded optimizations in recent patches have significantly improved performance for large-scale colonies. Managing Your Version: Build 1.4.3901
If you specifically need Version 1.4.3901, this is often used by players who want to maintain compatibility with older, unupdated mods. Anomaly (DLC) - RimWorld Wiki
RimWorld version 1.6, which corresponds to the 2025–2026 timeframe, introduces the major Odyssey
expansion alongside existing DLCs. If you are starting a new game with all DLCs (Royalty, Ideology, Biotech, Anomaly , and Odyssey Biotech-related fixes:
), you are engaging with a highly complex simulation that spans planetary exploration, biological engineering, religious cults, and psychic warfare. Comprehensive DLC Overview
When all five DLCs are active, they integrate into a singular, massive experience: RimWorld with All DLC Gameplay Part 1
The defining moment of the save file came on the 5th of Aptupil (Fall). A Golden Cube fell from the sky (Anomaly DLC).
The Cube was beautiful. It sang to them.
The Cube induced a "Gold Cube" obsession. The colonists stopped farming, stopped building defenses, and simply... stared. They created disturbing art—sculptures of flesh and gold.
Then, the Nerve Spikes attacked. Invisible, psychic parasites drove the colonists to insanity. While the colony was paralyzed by the Cube's beauty and the Nerve Spikes' pain, a massive Ritual Raid from a nearby Savage Tribe arrived.