Rimworld 1.4.3901 All Dlcs -
(released November 3, 2023) is a stable update within the 1.4 "Biotech" era. This specific build focuses on technical stability and integration between the core game and its major expansions. As of this version, the "All DLCs" package includes . Note that the
DLC was released later (April 2024) and is typically associated with version 1.5. Core Version 1.4.3901 Highlights
This update primarily addressed back-end issues to ensure a smooth experience with the expansion: Biotech Integration
: Fixed a critical issue where the Steam App ID for Biotech was missing or incorrectly parsed, which previously prevented some players from accessing DLC content. Data Maintenance
: Updated translation data and player-created content (like names and backstories) to maintain consistency across different languages and community contributions. RimWorld Wiki DLC Content Overview (1.4 Era)
With all DLCs enabled in version 1.4.3901, the gameplay experience is defined by three major pillars:
: Adds human reproduction, child-rearing, and genetic engineering. Players can create "Xenohumans" with custom traits and manage a "Mechanator"—a colonist who controls a swarm of friendly mechanoids.
: Introduces customizable belief systems. Your colony can follow specific "memes" (e.g., Cannibalism, Transhumanism, or Nudism), which unlock unique rituals, social roles, and buildings.
: Adds the "Fallen Empire" faction. Colonists can earn royal titles to gain psychic powers (Psycasts) and call in Imperial military aid, though they may become increasingly demanding as their rank rises. Quality of Life Features in 1.4
The 1.4 update introduced several base-game improvements available in this version: Auto-slaughter
: A dedicated UI to manage animal populations automatically based on your desired headcount. Tile Inspector
: Pressing 'Alt' now displays detailed information about the tile under your cursor, such as beauty and light levels. Improved UI
: Includes a search bar for the custom scenario editor and better formatting for research projects. RimWorld 1.4 Patch Notes - IGN
version 1.4.3901 is a stable build of the colony simulator that includes the Biotech expansion and various performance refinements. To have "complete content" for this version with all DLCs, your installation should include the following four expansions: Official DLC Expansions
Biotech: The most significant addition for version 1.4. It introduces children and reproduction, genetic engineering (Xenohumans), and the ability to control a swarm of mechanoids as a Mechanitor.
Ideology: Adds customizable belief systems. You can define your colony’s culture, ranging from cannibalistic undergrounders to techno-tribal tree worshippers, affecting how pawns react to events and rituals. Royalty
: Introduces a monarchical faction (The Empire), psychic powers (psycasts), and high-tech weaponry/armor. Pawns can earn royal titles and call in Imperial favors. (Note): While
is the newest DLC, it was released alongside Version 1.5. If you are strictly on 1.4.3901,
content will not be available as it requires the 1.5 engine update. Key Version 1.4 Features
Beyond the DLCs, version 1.4 itself brought several "base game" updates that are part of the complete experience:
Painting: The ability to paint walls, floors, and furniture.
Functional Shelves: Shelves were updated to hold up to three stacks of items per tile, drastically changing storage management.
Starting Possessions: You can now customize the specific items and gear your colonists start with more deeply.
Performance Improvements: Significant optimizations for mod heavy-save files and pawn pathfinding. Installation Verification
To ensure your content is complete, check the "Mods" menu from the RimWorld main screen. A complete 1.4 setup will show:
The request "paper: Rimworld 1.4.3901 All DLCs" refers to a specific patch version of the colony simulator , which was current during the expansion cycle. Version Context (1.4.3901) RimWorld version
was a minor update within the 1.4 "Biotech" branch. Released in late 2022, it primarily focused on bug fixes and performance improvements following the massive 1.4 content update. Included DLCs for this Version
As of version 1.4.3901, "All DLCs" refers to the first three major expansions. Later expansions like (released in 2024 and 2025 respectively) are not compatible with the 1.4 branch. RimWorld Wiki
: Adds a psychic-powered nobility system, high-tech weaponry, and the "Empire" faction.
: Introduces belief systems (Ideoligions) that dictate how your colonists behave, what they eat, and their social structures.
: The flagship DLC for version 1.4, adding children/reproduction, genetic modification (Xenohumans), and controllable mechanoids. RimWorld Wiki Managing Mods and DLCs
If you are looking for a stable mod list for this specific version, the Better RimWorld 1.4 Steam Collection includes essential libraries like configured for the 1.4 game state. essential quality-of-life mods that are confirmed to work with version 1.4.3901? Biotech (DLC) - RimWorld Wiki
Title: The Choir of the Glass Sea
Scenario: A lost tribe of transhumanists stranded on a hostile sea ice shelf. Expansion Coverage: Core, Royalty, Ideology, Biotech, and Anomaly.
RimWorld 1.4.3901 — All DLCs
Part 2: First Blood (Quadrum 1)
The first raid comes on day 4 — a lone, half-starved mad hare. Jin-ho beats it to death with a log. They eat.
By day 12, a wooden hut stands against a hill. A rice field spreads, irrigated by a nearby stream. Then the void calls.
Anomaly event: “Strange Signal” from a jagged monolith half-buried in a marsh. Lyssa touches it. Her neural tattoos flare black. That night, she dreams of flesh that walks like a man but is not. A Metal Horror — dormant — now resides inside her liver. No symptoms. No cure but fire or a glitterworld surgical suite.
She says nothing. But she starts locking her room.
The Trinity: A Breakdown of "All DLCs"
To truly play RimWorld 1.4.3901 All DLCs, you need three major expansions. Here is what each adds to this specific patch version.
References
- Ludeon Studios: Official RimWorld website and forums.
- RimWorld Wiki: A comprehensive wiki with detailed information on game mechanics and features.
version 1.4.3901, combined with all major DLCs ( , , and ), represents the peak of the game's complexity prior to the 1.5 update. This version specifically polished the "
" mechanics and deepened the integration between the different expansions. Core DLC Mechanics Overview Biotech (The Core of 1.4)
: This is the most transformative DLC for this version. It introduces Children and Reproduction, allowing your colonists to have biological families. It also adds Genetics, letting you create "Xenotypes" (like vampires or fire-breathers), and Mechanitor gameplay, where a single colonist can control an army of friendly robots.
: Adds belief systems. Your colony isn't just surviving; they are "Techno-mancers," "Cannibal Raiders," or "Nature Primals." This dictates what makes them happy (e.g., some might love scars, while others hate cutting trees).
: Introduces the Shattered Empire, a high-tech faction that grants your colonists Psylink powers (teleportation, mind control) and noble titles in exchange for honoring their strict traditions and building grand throne rooms. Starting Your 1.4.3901 Run
The Mechanitor Start: If you want to experience the best of 1.4, choose the "The Mechanitor" scenario. You start alone with one "Lifter" bot and one "Constructoid." Focus on scavenging Subcore components to grow your swarm.
Gene Management: Build a Gene Extractor early. Even if a raider has terrible stats, if they have a "High Libido" or "Robust" gene, extract it before they die to build your own custom super-soldiers later.
Growth Vats vs. Natural Aging: In version 1.4, children grow quickly, but you can use Growth Vats to bypass the "useless" toddler years. However, letting them grow naturally and assigning them "Learning" tasks results in much higher passion levels and better traits. Advanced Synergy Tips
Psycast + Genetics: Combine a Royal Psycaster with the "Psychically Sensitive" gene from Biotech to create a god-tier caster with massive neural heat limits.
Ideological Mechanoids: Set your Ideoligion to "High Life" or "Supremacist" to buff your combat effectiveness while your robots handle the manual labor that your "specialized" colonists refuse to do.
Pollution Management: Biotech adds pollution. If you play as Wasters (a Xenotype), you actually thrive in toxic waste. Otherwise, you’ll need to invest in Wastepack Atomizers or transport pods to dump your trash on rival factions. Essential Technical Notes
Mod Compatibility: 1.4.3901 is highly stable for mods. If you are using the Steam Workshop, ensure your mods are tagged for 1.4.
Performance: With three DLCs running, the "late game" (5+ years) can lag. Use the RocketMan or Performance Optimizer mods to keep your TPS (Ticks Per Second) high.
represents a refined state of the game’s third major expansion era, providing deep integration between the base game and its three core DLCs:
. This build focuses on cross-expansion synergy, ensuring that features like genetic modification from interact seamlessly with the belief systems of Core DLC Integration & Version Features Expansion Synergy
: Build 1.4 introduced specific "cross-expansion" content, such as new precepts that respond to features like bloodfeeding and mechanoid labor. Genetic Persistence
: Improvements in version 1.4.3901 ensure that "xenotypes breed true," meaning gene-modded humans reliably pass down their specific genetic traits to offspring. Refined UX
: This version includes significant UI overhauls, such as a dedicated mod manager, functional shelving for triple-stacking items, and a "heat overlay" to manage room temperatures effectively. in 1.4.3901
With all DLCs active, your RimWorld experience is divided into three distinct pillars of play: Royalty (DLC)
version 1.4.3901, when paired with its full suite of expansions, represents the definitive era of the "story generator" before the transition to 1.5. This specific build serves as a stable, content-rich peak where the four major pillars—Royalty, Ideology, Biotech, and Anomaly—interlock to create a simulation of unparalleled depth.
The Royalty expansion introduces a vertical layer of progression through the Imperial hierarchy. It transforms individual pawns from mere survivors into noble figures capable of wielding "psycasts," effectively a soft magic system grounded in the game's sci-fi lore. This DLC shifts the gameplay focus toward questing and defending high-value assets, as noble pawns demand increasingly luxurious accommodations and specialized gear to maintain their status.
Building on the social fabric, the Ideology DLC allows players to define the very soul of their colony. By selecting specific memes and precepts, players can dictate everything from dietary restrictions to attitudes toward slavery or cannibalism. This system moves the game beyond simple survival and into the realm of roleplay, forcing players to manage the "mood" of their colony not just through physical comfort, but through the fulfillment of abstract spiritual and cultural needs.
Biotech stands as arguably the most transformative addition in the 1.4 era. It introduces three massive systems: xenotypes (genetics), mechanitors (controllable robots), and children. The ability to raise a second generation of colonists adds a profound sense of continuity and long-term consequence. Meanwhile, the gene-modding system allows for the creation of specialized "super-soldiers" or workers, and the mechanitor path offers a new way to automate labor and defense at the cost of managing toxic pollution.
The Anomaly expansion completes the 1.4 experience by leaning into cosmic horror. It introduces a darker, more reactive threat level where colonies must contend with eldritch entities and mysterious rituals. This DLC provides a sharp contrast to the high-tech focus of Biotech or the political maneuvering of Royalty, challenging players to balance scientific curiosity with the risk of total psychological or physical collapse.
Ultimately, RimWorld 1.4.3901 with all DLCs is no longer just a colony management game; it is a complex ecosystem of competing ideologies, biological engineering, and psychic warfare. Each expansion fills a unique niche, ensuring that no two playthroughs ever feel the same. Whether you are building a high-tech corporate utopia or a primitive cult of flesh-shapers, the 1.4 build remains a masterpiece of emergent storytelling. If you'd like, I can help you:
Compare the difficulty of the different DLC-specific endings Rimworld 1.4.3901 All DLCs
Identify the best mods that are specifically compatible with version 1.4
Develop a starting strategy for a colony using a specific Ideology and Biotech xenotype
RimWorld 1.4.3901: The Ultimate Colony Simulation Experience RimWorld version 1.4.3901
represents a highly stable and content-rich era of the sci-fi colony sim. Whether you are managing a group of crash-landed survivors or a burgeoning empire, this version integrates years of refinements with the game's expansive DLC lineup to create a deep, emergent storytelling experience. Core Enhancements in 1.4
The 1.4 update brought significant technical and gameplay improvements to the base game, including:
Performance Optimization: Significant upgrades to the rendering engine and pawn logic, allowing for smoother gameplay with larger colonies.
Painting & Customization: The ability to paint walls, floors, and furniture, giving players much more creative control over their base aesthetics.
Gene Modding & Children: While expanded by DLCs, the base systems for growth and biological complexity were refined in this version.
New Starting Scenarios: Fresh ways to begin your journey, including the "Mechanitor" start for those who want to command a robot army. The Complete DLC Experience
To get the most out of RimWorld 1.4.3901, the three major expansions add distinct layers of complexity: 1. Royalty
Focuses on the arrival of the shattered Empire. It introduces:
Noble Titles: Pawns can earn titles like Knight or Baron, gaining access to powerful "psylink" abilities.
Psychic Powers: Use the mind to teleport enemies, inspire allies, or ignite fires.
Imperial Quests: High-stakes missions involving grand ceremonies and advanced tech rewards. 2. Ideology
Turns your colony into a belief-driven society. It allows you to:
Create Religions: Design a custom "Ideoligion" that dictates what your pawns find moral or offensive (e.g., cannibalism, technophilia, or tree-worship).
Specialist Roles: Assign pawns as Moral Guides or Production Specialists to gain massive efficiency buffs.
Rituals & Relics: Host dance parties, gladiator duels, or sacrificial rites to boost colony mood. 3. Biotech
The largest expansion to date, focusing on biology and robotics:
Mechanoids: Become a "Mechanitor" to build and control your own labor and combat robots.
Genetics: Extract and combine "Xenogerms" to create super-soldiers, immortal vampires (Sanguophages), or fire-breathing workers.
Children & Reproduction: Pawns can now have children, allowing you to raise the next generation of colonists from birth, shaping their traits and skills. Why Version 1.4.3901?
This specific sub-version is often cited in the community for its mod compatibility. Most major mods (like the Vanilla Expanded series) are fully optimized for the 1.4 cycle. It provides a "sweet spot" of content before the more radical changes introduced in later updates like 1.5 and the Anomaly DLC.
Here is the full piece of information regarding RimWorld 1.4.3901 with All DLCs:
Game: RimWorld
Version: 1.4.3901 (current stable build as of early 2023; superseded by 1.5 in 2024)
Included DLCs:
- Royalty (psychic powers, imperial titles, mech clusters)
- Ideology (belief systems, rituals, roles, memes)
- Biotech (mechanitors, children, gene modding, pollution, xenotypes)
Key features of version 1.4.3901:
- Added turret aiming mechanics (warm-up, barrel heat)
- Improved multi-select for pawns and work orders
- Child & growth mechanics (from Biotech) fully integrated
- Mech command UI improvements
- Hundreds of bug fixes over earlier 1.4 builds
How to obtain:
Purchased via Steam, GOG, or directly from Ludeon Studios. The “All DLCs” bundle is listed as RimWorld – Complete Edition on most storefronts.
⚠️ Note: Version 1.4.3901 is no longer the latest. The current version as of 2026 is 1.5.x (Anomaly DLC included). If you need the exact 1.4.3901 for mod compatibility, you can select it via Steam’s “Betas” tab.
Would you like a download/installation guide for this specific version, or help finding mods compatible with 1.4.3901?
Released on November 3, 2023, RimWorld version 1.4.3901 focused on technical stability, cross-expansion integration, and critical bug fixes, particularly addressing a Biotech DLC Steam ID issue. The update solidified features from the 1.4 lifecycle, including improved storage, painting, and new turret mechanics. For full details on this version, visit the RimWorld Wiki RimWorld Wiki Version/1.4.3901 - RimWorld Wiki
This feature adds a new layer to the Biotech growth system and Royalty titles, allowing you to preserve the "soul" and skills of a dying high-tier noble or master crafter.
The Relic Sarcophagus (Building): A high-tech, glitterworld-tier casket that requires Archite Capsules to operate. When a pawn with a high-level Title or specialized Gene-set dies, you can inter them here to begin "Neural Distillation." (released November 3, 2023) is a stable update within the 1
Skill Imprinting: Instead of just inheriting a title, a chosen "Heir" (often a child raised in the colony) can undergo a Neural Link ceremony. This transfers a portion of the deceased pawn's XP and specific "Personality Quirks" (Traits) to the heir.
The "Ancestor" Persona: The Heir gains a unique "Ancestor Link" headdress slot. While worn, they occasionally receive "Flashbacks"—temporary, massive buffs to the skills the ancestor excelled in (e.g., +10 Shooting for 4 hours during a raid).
Ideology Integration: Your Ideoligion can view this as Digital Nirvana (Mood bonus for successful transfers) or Techno-Sacrilege (Mood penalty and potential "Ghost" mental breaks where the pawn confusedly thinks they are the deceased ancestor).
Why it fits 1.4.3901:It solves the frustration of losing a "Gen-1" colonist you've spent 100 hours perfecting with genes and bionics, turning death into a strategic moment for generational progression rather than just a loss.
RimWorld version 1.4.3901 serves as a vital stable point for many players, particularly those managing complex mod lists or transitioning between major game eras. This specific build ensures compatibility across the first three major expansions while laying the groundwork for the massive technical shifts seen in later versions. The Core Experience: Version 1.4.3901
Released in late 2023, v1.4.3901 is often the preferred choice for players who want a "complete" traditional RimWorld experience without the drastic shift into horror or spaceflight themes introduced in subsequent 1.5 and 1.6 updates.
Expanded Integration: Version 1.4 bridged the gaps between previous DLCs, adding cross-expansion content like Ideology precepts that specifically interact with Biotech genes and mechanoids.
Performance & UI: This version finalized several quality-of-life upgrades, including the Tile Inspector, functional shelves, and the painting system for walls and floors.
Stability for Mods: As subsequent updates (like 1.5) broke many existing mods, v1.4.3901 remains a "safe harbor" for players using legendary mod collections. All DLCs: Expanding the Rim
To get the most out of version 1.4.3901, many players opt for the "All DLCs" package, which fundamentally transforms the colony sim from a survival game into a multi-generational epic. 1. Royalty (The Imperial Path)
Introduced the Shattered Empire, a high-tech faction that offers noble titles in exchange for favors. Rimworld Review 2023 - Biotech + Other DLCs
RimWorld version 1.4.3901 , the peak of the 1.4 era before the transition to 1.5. With all DLCs enabled (
), the game transforms from a simple survival sim into a sprawling, multi-layered "story generator" that can handle anything from high-fantasy space magic to cosmic horror. The Ultimate Synergy: Mixing All DLCs
In this version, the expansions don't just sit side-by-side; they weave together to create bizarre, emergent gameplay: Hi everyone - Steam 11 Apr 2024 —
RimWorld 1.4.3901: The Ultimate Survival Sandbox version 1.4.3901 is the final stable build of the 1.4 era, representing the pinnacle of the "Biotech" expansion cycle. This version provides a comprehensive and balanced experience for players who own all DLCs, bridging the gap before the massive 1.5 update and the Anomaly expansion. Core Update Features (v1.4)
Even without expansions, version 1.4 introduced massive quality-of-life improvements:
Shelf Overhaul: Shelves now hold up to 3 stacks per tile, drastically reducing the need for massive storage rooms.
Functional Decor: You can now grow Tinctoria to create dyes, allowing you to paint walls, floors, and customize colonist apparel.
Tactical Tools: Added Rocketswarm Launchers and Foam Turrets for better defensive utility.
Corpse Mechanics: Rotten corpses now release "stink gas," which can cause lung rot if inhaled for too long. The Power of All DLCs
Playing with the full suite (Royalty, Ideology, and Biotech) transforms the game into a complex socio-political and biological simulation. Royalty: The High Life
Empire & Titles: Gain favor with the Shattered Empire to unlock noble titles, permitting calls for orbital strikes and elite trooper reinforcements.
Psycasts: Unlock psychic abilities to skip enemies across the battlefield or force them into a berserk rage. 2. Ideology: The Belief System
Custom Cultures: Define exactly how your colony lives—from undergrounder mole-people to tree-worshipping cannibals.
Roles & Rituals: Assign specialized roles like the Moral Guide or Shooting Specialist and hold festivals to boost colony mood. 3. Biotech: The Next Generation
Children & Education: Colonists can now have biological or surrogate children, requiring you to build schools and nurseries.
Mechanitors: Control your own swarm of mechanoids for labor and defense.
Gene Modding: Use the gene extractor to create super-soldiers or specialized workers. Pro-Tip: Managing the 1.4 Experience
Since RimWorld has moved on to version 1.5, many active mods may have updated automatically. If you want to stay on this specific build for stability or mod compatibility: Right-click RimWorld in your Steam library. Select Properties > Betas.
Choose version-1.4.3901 - Final 1.4 build from the dropdown menu. Hi everyone - Steam
Part II: The Grey Host (Royalty & Ideology)
It started with a message on an ancient console. The Empire was nearby—a fragment of the once-great civilization that had forgotten the Ascendants' pilgrimage.
A shuttle landed. Out stepped a High Stellarch, clad in shimmering eltex robes. He demanded respect. Harrow, stubborn and proud, refused to bow to a man who clung to flesh when steel was superior. RimWorld 1
The Empire attacked. They sent cataphracts—armored juggernauts landing in drop pods right into the colony’s courtyard. The battle was brutal. Tink, hopped up on combat drugs, held the doorway with a heavy SMG, his superhuman physiology ignoring bullets that would have killed a normal man. Skarf’s bear, Ursa, mauled a lancer, staining the snow red.
After the victory, they captured a terrified Baron. Harrow saw an opportunity. He enacted the Ideoligion of the Ascendants: Transhumanist Supremacy. They did not execute the Baron. They "improved" him. In the operating theater, Harrow and Naomi removed the Baron’s legs and eyes, replacing them with bionic prosthetics. They scarified his skin with neural implants. He was no longer an enemy; he was a Husser, a cyborg serf bound to serve the colony. The Ascendants had their first slave, and their moral standing with the Empire plummeted to "Hostile."
