Rimworld V1.4.3517 Now

: 1.4.3517 addressed several underlying issues in the C# and XML codebases to help modders keep their content compatible with the evolving 1.4 framework. Notable Features in the 1.4 Era

: This version improved game stability, specifically targeting performance issues that arose with the new pollution and tox mechanics introduced in the Biotech expansion. RimWorld v1.4.3517

was a critical hotfix update released during the active development cycle of the Biotech DLC and the 1.4 base game update. While it didn't introduce massive new features like the primary 1.4 patch, it focused on significant stability improvements and "quality of life" (QoL) refinements. Core Update Highlights While it didn't introduce massive new features like

: Refinements were made to the then-new security buildings, such as the Foam Turret (which suppresses fires) and the Rocketswarm Launcher (effective against large groups of unarmored enemies). RimWorld v1.4.3517

: Core Biotech features that allowed players to engineer custom xenohumans and manage colony families.