ATCHED
Stellaris

Stellaris

Paradox Development Studio / Paradox Interactive

Strategy

A sci-fi grand strategy game where players explore a procedurally generated galaxy, interact with alien species, and expand a spacefaring empire.

// PATCH HISTORY

2/5 Minor1w ago

Stellaris Dev Diary #417 - Situation Log Updated

COMING SOONMajor Situation Log and Megastructure UI overhauls announced for v4.4 alongside a v4.3.5 hotfix addressing Virtuality scaling and Machine Empire bugs.

3/5 Moderate2w ago

Stellaris Dev Diary #416 - Quality of Life Improvements

Stellaris v4.3.4 'Cetus' introduces a 10-year cap on MIA fleets and adds regeneration debuffs to Disruptors, while the v4.4 'Pegasus' preview details a massive job system overhaul.

3/5 Moderate3w ago

4.3.4 Open Beta (part two) is now on stellaris_test [checksum 44ba]

BETADisruptor weapons now reduce enemy regeneration while major fixes address oversized fleets and purge mechanics.

3/5 Moderate3w ago

Stellaris Dev Diary #415 - The Gamma Menace

BETADisruptor weapons now reduce enemy regeneration while the upcoming 4.4 'Pegasus' update will introduce the ability to join or leave ongoing wars.

4/5 SignificantApr 2, 2026

Stellaris Dev Diary #414b - Portrait Substitution System

Stellaris v4.3.3 introduces Naval Capacity sliders and massive Space Fauna buffs alongside the new scriptable Portrait Substitution system for Arachnophobia Mode.

2/5 MinorMar 31, 2026

Stellaris 4.3.3 patch released (checksum 456f)

New Naval Capacity and Command Limit sliders added to galaxy settings alongside a major fix for Starbase armor and significant buffs to building efficiency.

4/5 SignificantMar 26, 2026

Stellaris Dev Diary #413 - 4.3 ‘Cetus’ Has Released, What’s Next?

Stellaris v4.3 'Cetus' introduces new Naval Capacity sliders, significant balance buffs to efficiency buildings, and the 'Utopian Abundance' initiative moving three major DLCs into the base game.

2/5 MinorMar 24, 2026

Stellaris 4.3.2 patch released (checksum 171a)

Fleets now engage targets further from system centers while Wilderness and Sovereign Guardianship civics receive significant Empire Size penalty reductions.

2/5 MinorMar 20, 2026

4.3.2 Open Beta is now on stellaris_test [checksum 171a]

Empire Size penalties for Wilderness and Sovereign Guardianship are reduced alongside improvements to fleet engagement ranges and critical crash fixes.

2/5 MinorMar 19, 2026

Stellaris 4.3.1 hotfix release (checksum f646)

Hotfix 4.3.1 prevents save corruption from the launcher's resume button and restores the missing Paradox Account Avian portrait.

5/5 Game-ChangingMar 11, 2026

Stellaris Dev Diary #412 - 4.3.0 ‘Cetus’ Preliminary Release Notes

Stellaris 4.3.0 'Cetus' introduces a massive naval and economic overhaul, increasing ship naval capacity usage by 5x while halving tech costs and significantly optimizing game performance.

4/5 SignificantMar 6, 2026

Stellaris 4.3 "Cetus" Open Beta Updated (2026-03-06)

The experimental Factions and Ethics system has been removed for further development, alongside a major rework of Technocracy and severe new penalties for Zro deficits.

4/5 SignificantMar 4, 2026

Stellaris 4.3 "Cetus" Open Beta Updated (2026-03-04)

Major rework of the Pop Group system to improve performance and UI clarity, alongside a significant overhaul of the Synthetic Fertility origin and Luminary leader traits.

3/5 ModerateFeb 27, 2026

Stellaris 4.3 "Cetus" Open Beta Updated (2026-02-26)

Mutagenic Spas and Biomorphosis receive major balance overhauls alongside significant trade buffs for Starbases and a fix for Planet Automation.

4/5 SignificantFeb 26, 2026

Stellaris Dev Diary #411 - Our Next 4.3 Experiment

Major overhaul to Pop Ethics allowing mixed ethics within single pop groups, alongside significant balance reworks for Mutagenic Spas and the Biomorphosis ascension path.

4/5 SignificantFeb 19, 2026

Stellaris 4.3 "Cetus" Open Beta Updated (2026-02-19)

Multiple End Game Crises can now overlap with a 25-year delay, alongside a major rework of the Aptitude Tradition and Mutagenic Spas civic.

3/5 ModerateFeb 12, 2026

Stellaris 4.3 "Cetus" Open Beta Updated (2026-02-12)

Ship combat behavior receives a major overhaul alongside significant buffs to Lithoid starts and the Police State and Aristocratic Elite civics.

4/5 SignificantFeb 6, 2026

Stellaris 4.3 "Cetus" Open Beta Updated (2026-02-06) [Checksum 2e59]

The Eater of Worlds Covenant receives a massive mechanical rework with a new Doom Intensity system, while Driven Assimilators see a huge job boost to Augmentation Centers.

4/5 SignificantFeb 5, 2026

Stellaris Dev Diary #410 - 4.3 Performance Comparisons

The 4.3 'Cetus' update delivers massive performance gains, reducing early-game year times from 30.5s to 11.5s, alongside a complete rework of the Eater of Worlds Covenant.

4/5 SignificantJan 30, 2026

Stellaris 4.3 "Cetus" Open Beta Updated (2026-01-30)

Major balance overhaul for the Cetus Open Beta, featuring a massive 33-50% reduction in Crisis fleet power and a comprehensive buff to Cybernetic Ascension mechanics.

3/5 ModerateJan 22, 2026

Stellaris Dev Diary #409 - The 4.3 ‘Cetus’ Open Beta Continues

Massive performance optimizations for event processing and ship modifiers alongside a balance pass for the Cutholoid encounter and Scorched World Heralds civic.

3/5 ModerateJan 15, 2026

Stellaris 4.3 "Cetus" Open Beta Updated (2026-01-15)

Ground combat receives a major overhaul with tech-based stat scaling, while the Cybernetic Creed origin and Driven Assimilators see significant balance adjustments.

5/5 Game-ChangingDec 19, 2025

Stellaris 4.3 "Cetus" Open Beta Updated (2025-12-18)

Stellaris 4.3 'Cetus' introduces a complete Refugee Attraction system and a massive overhaul of Naval Capacity, increasing ship usage by 5x while halving tech costs.

5/5 Game-ChangingDec 11, 2025

Stellaris 4.3 "Cetus" Open Beta now available

The 'Cetus' Open Beta introduces a massive naval capacity overhaul with 5x ship usage costs and a fundamental economic rebalance to curb power creep.

Quick Stats

Last update
1w ago
Platforms
pc, playstation, xbox

Official Source

View official patch notes