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Steam News27 June 20267d ago

Patch v0.3 - Pollution!

Its been about a month since the last patch and work continues! The headline of this update is a brand-new pollution loop, a major overhaul of the power and water grids (now with renewable generation), and a much richer

In this update7

Full notes

Full CityZen update

Read the full published notes in a cleaner layout. The original post stays linked below.

What changed

1 fix11 additions4 changes1 removal
  • Gameplay
  • Maps
  • Balance
  • UI and audio
  • Performance
addedIts been about a month since the last patch and work continues! The headline of this update is a brand-new pollution loop, a major overhaul of the power and water grids (now with renewable generation), and a much richer view into how your residents are doing. With the Playtest now publicly available, the demo has been retired.
addedPollutionAdded a new pollution system. Heavy industry now contaminates the ground around it, and that contamination spreads to nearby tiles and slowly cleans itself over time
addedPollutionAdded a Pollution overlay - a heat-map that shades the ground by how contaminated it is, so you can see at a glance where your city is dirtiest
addedPower and Water gridsAdded renewable power generation
addedPower and Water gridsAdded power storage and improved power transmission
addedPower and Water gridsAdded water generation, water treatment, and improved water transmission

CityZen changes

addedIts been about a month since the last patch and work continues! The headline of this update is a brand-new pollution loop, a major overhaul of the power and water grids (now with renewable generation), and a much richer view into how your residents are doing. With the Playtest now publicly available, the demo has been retired.
addedAdded a new pollution system. Heavy industry now contaminates the ground around it, and that contamination spreads to nearby tiles and slowly cleans itself over time
addedAdded a Pollution overlay - a heat-map that shades the ground by how contaminated it is, so you can see at a glance where your city is dirtiest
addedAdded renewable power generation
addedAdded power storage and improved power transmission

Its been about a month since the last patch and work continues! The headline of this update is a brand-new pollution loop, a major overhaul of the power and water grids (now with renewable generation), and a much richer view into how your residents are doing. With the Playtest now publicly available, the demo has been retired.

New Features

Pollution

  • Added a new pollution system. Heavy industry now contaminates the ground around it, and that contamination spreads to nearby tiles and slowly cleans itself over time

  • Pollution affects your residents: dirty neighborhoods lower happiness, which in turn lowers the taxes those dwellings pay

  • Industry that produces wastewater must now route it somewhere

  • Added a Pollution overlay - a heat-map that shades the ground by how contaminated it is, so you can see at a glance where your city is dirtiest

Power and Water grids

  • Added renewable power generation

  • Added power storage and improved power transmission

  • Added water generation, water treatment, and improved water transmission

Economy and buildings

  • Reorganized the economy and added new service-based commodities and buildings

  • Added new Service related buildings

  • Rebalanced construction and operating costs across the building palette

Improvements and Enhancements

  • UXAdded a detailed dwelling needs panel. Inspecting a home now shows each of its needs, how stocked each slot is, current happiness, expected daily tax, and its pollution tolerance
  • UXImproved building inspection - selecting a building now highlights its area of effect more clearly with a dedicated overlay
  • UXAdded toggleable information overlays
  • UXImproved and corrected building tooltips
  • UXAdded localization for several major languages

Performance

  • Optimized building materials for better performance

  • Significantly optimized the water shader for better performance

Note

  • With the Playtest available, the demo will be disabled

Source

Steam News / 27 June 2026

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