update · February 22, 2024
Stellaris 3.11 Eridanus Update Release Notes
Stellaris update 3.11 Eridanus introduces separated technology and difficulty sliders, leader traits rebalancing, extensive ship upkeep adjustments, and numerous bug fixes.
Paradox Interactive has released the preliminary release notes for the Stellaris 3.11 Eridanus Custodian update, scheduled for release on February 27, 2024.
Galaxy Setup and System Changes
Galaxy generation now features a dedicated Technology Costs slider alongside a separate Difficulty Adjusted Technology Costs slider. A new Seedom system has been added. Sovereign Guardianship and Corporate Protectorate civics now support mutual conversion. Pre-FTL civilizations that reach space age while you hold a colony in their system can now be annexed after an apology.
Economy and Civic Rebalancing
Bio-Reactors are converted to a tier 1 rare technology that converts farmer food output into energy or exotic gases via advanced variants. Leader traits from Ascension Paths have been rebalanced, and researcher job outputs have been reduced. Ship upkeep and cost reductions have been stripped from most game sources, significantly scaling back modifiers previously granted by civics, traditions, and edicts. Rulers now generate 12 XP per month.
Leader and Civic Adjustments
Knights of the Toxic God mechanics have been refactored so squires and knights use additive output modifiers. Curators now grant +10% research speed alongside +10% researcher upkeep. Xenophobic leaders are half as likely to accept brainslugs, while xenophilic leaders are twice as likely.
Bug Fixes and Stability
The patch resolves numerous issues including missing leader upkeep tooltips, broken event scopes using is_leading_research, duplicate buttons in the ship designer, and exploits allowing cyborg zombies to spawn at incorrect rates. Scripted events for astral rifts, fallen empires, and precursor systems have also been corrected.
Why this patch matters
The Eridanus update restructures Stellaris campaign pacing by decoupling tech costs, scaling back economy-wide ship upkeep discounts, and refining civic interactions.