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Oxygen Not Included
Oxygen Not Included
IndieSimulation
Klei Entertainment · Klei Entertainment·-70%$7.49
Feb 2, 2018 · 101mo ago

[Preview Update] - Hotfix 253538 and a note about priority

AI summary2d

A major update introducing a Job system with permanent perks, attribute leveling changes, and several hotfixes addressing stability and building behavior.

Buffs6

  • Jobs System
    • Job perks are now permanent once a job is mastered, rather than temporary.Permanent
    • A larger number of Duplicants can now be assigned to a single job.Increased
  • Steam Turbine
    • The Steam Turbine can now be controlled via logic signals.Added
    • The Steam Turbine now accepts steam at lower temperatures, increasing viability.Reduced
    • The turbine no longer requires steam to be present in the tile directly above it to function.Requires steam aboveWorks without steam above
  • GeneralThe Coal Generator can now be controlled via logic signals.Automatable

Nerfs1

  • DuplicantsThe maximum base level for attributes has been reduced to 20.20

Bug fixes1

  • GeneralFixed numerous crashes related to transfer arms, logic doors, Auto-Sweepers, and save loading.

Other changes9

  • Duplicants
    • The strength attribute has been reintroduced to determine how much a Duplicant can carry.RemovedAdded
    • Athletics is now rolled separately from other attributes and is no longer directly buffed by jobs.
    • Anemic:The Anemic trait now impacts athletics instead of strength.strengthathletics
  • Jobs System
    • Job management is now restricted to the Jobs Desk building.Jobs Desk
    • Job-related subpriorities have been completely removed to simplify Duplicant behavior.ActiveRemoved
  • Priority System
    • The priority scale has been standardized to 1-9.1-9
    • Jobs now affect priority within a single level (e.g., preferring one prio 5 task over another) rather than overriding higher priority levels.Across levelsWithin level
  • Auto-SweeperFixed an issue where Auto-Sweepers had overly aggressive or incorrect item placement logic.Fixed
  • GeneralIncreased the specific heat capacity of Igneous Rock, Magma, and Rock Gas to 1.1

subjects affected (6)

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How did this patch land?
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official notes
Oxygen Not Included · Feb 2, 2018
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Patch history

see all 97

  1. [Game Update] - 737195
    Jun 12, 2026 · 3d
    +1
  2. [Game Update] - 720580 & 720697
    Apr 2, 2026 · 2mo
    +4
  3. [Game Update] - 707956
    Jan 16, 2026 · 5mo
    +1
  4. [Game Update] - 706793
    Jan 12, 2026 · 5mo
    +1
  5. [Game Update] - 704096
    Dec 11, 2025 · 6mo
  6. [Game update] - 703433
    Dec 9, 2025 · 6mo
    +3
  7. [Game Update] - 702577 & 702808
    Dec 4, 2025 · 6mo
    +3
  8. [Game Update] - 701625
    Nov 28, 2025 · 6mo
    +2

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