This specific build (3580) included minor bug fixes to ensure the game remained stable while running heavy mod lists or the Biotech , Ideology , and Royalty expansions. Installation Notes If you are using a standalone ZIP version of the game:
Improved logic for how colonists interact with specific room types like classrooms or laboratories. RimWorld.v1.4.3580.zip
Note that save files and mods are typically stored in the %AppData%\LocalLow\Ludeon Studios\RimWorld by Ludeon Studios directory, regardless of where the game folder is located. This specific build (3580) included minor bug fixes
Extract the contents of the ZIP file to a dedicated folder (e.g., C:\Games\RimWorld ). Extract the contents of the ZIP file to
RimWorld version is a specific update for the sci-fi colony simulator developed by Ludeon Studios. This build was part of the 1.4 "Biotech" era, focusing on stability and compatibility for various expansions and mods. File Overview: RimWorld.v1.4.3580.zip Game Title: RimWorld Version: 1.4.3580 Format: Compressed ZIP Archive Developer: Ludeon Studios Genre: Construction and Management Simulation, Colony Sim Key Features of Version 1.4
Ensure your download comes from an official source like Steam , GOG , or the Ludeon Studios website to avoid malware and support the developers.
Significant reductions in "tps" (ticks per second) lag, especially for late-game colonies with many pawns and animals.