1.5 improves performance and adds structural design elements. Threats: Anomaly brings intense, horror-themed threats.

To play RimWorld 143901, ensure your system meets the following requirements:

When running a "New All DLC" save, these systems do not function in isolation; they create a rich, chaotic ecosystem. A colony might consist of genetically engineered supersoldiers (Biotech) who worship a dark god of the void (Ideology), utilizing psychic screams (Royalty) to fight off an invasion of invisible flesh-beasts (Anomaly). This synergy ensures that no two stories are ever the same.

: 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.

: Defend your base against invisible hunters, flesh-mass growths, and mind-controlling monoliths.

Instead of just killing the horrors, you can capture and study them in containment facilities. Harness their dark powers to weaponize them against your enemies.

: Restrict domestic animals to specific zones so the engine does not waste processing power calculating paths across the entire map.

: Implant a control chip into a colonist's brain to construct and command a private army of worker and combat mechanoids. 4. Anomaly: Cosmic Horror and Dark Research

Create custom cultures ranging from underground, insect-eating technocrats to tree-worshiping cannibals.

First and foremost, it's important to clarify that "143901" is not a secret code or an expansion name. It's the version number , a previous stable build of the game. Here's a closer look at what this version represents:

The fourth major expansion introduces a grim, psychological horror layer to the Rim.

Released alongside the , Odyssey breaks the game out of its single-map isolation and turns RimWorld into a dynamic, planet-trotting adventure. Version/1.5.4062 - RimWorld Wiki

Earn titles from the Empire to unlock technology and special armor, but beware the high-maintenance demands of royal guests. Why "All DLCs New" is the Definitive Way to Play in 2026

If you want to dive deeper into a specific expansion or need a custom mod list for this build, just let me know!