Für Prison Architect (ab 6,25€ bei kaufen) ist das vierte Update nach Verkaufsstart veröffentlicht worden. Das ca. 100 MB große Update erweitert die Gefängnisaufbausimulation mit einem Wärme-/Kältesystem. Die Temperatur außerhalb des Gefängnisses verändert sich im Tagesverlauf und innerhalb der Einrichtung geht beispielsweise Wärme in der Nähe von Türen und Fenster verloren. Zugleich hat die Temperatur einen Einfluss auf die Insassen. Neben dem grundlegenden Bedürfnis nach Wärme kann es auch zu Hitzeschock-Problemen kommen, wenn ein Insasse z.B. in der Küche arbeitet.

Thermodynamics

• The game now models the ambient temperature of the world, and it's effect on your prisoners.
• The outdoor temperature will vary during the day, and turn cold at night 
• The temperature of your indoor areas will be affected by this. Indoor areas near doors and windows will lose heat fast. 
• Certain existing objects generate lots of heat : Cookers (when in use), power stations, water pumps 
• New toolbar button under Logistics : Temperature. Visualises the temperature of all areas of your prison 
• Prisoners now have a Warmth need. This need increases when they are cold. 
• They will protest if cold for too long, and eventually cause trouble. 
• If prisoners are too hot for too long (for example working in a hot kitchen) they will develop a status effect "Overheating". This makes them more likely to cause trouble. 
• New item : Radiator. Build these around your prison to warm up the indoors when required.
  

• The old "Clone" toolbar item has been replaced with a new "Quick Build" menu, with more options.
• You can now pick from a set of template rooms, and stamp them dowm in your prison. 
• All neccesary foundations will be built (if required), and the area will be cleared of walls and objects. 
• Then your workmen will build all the walls and objects required. 
• The room type will be automatically assigned. 
• You can rotate a quick build room using R or middle mouse click. 
• Available quick build rooms:
  - Basic Cell
  - Solitary Cell
  - Luxury Cell
  - Shared Cell
  - Office
  
• Nb. Clone is now available in the Quick Build menu and no longer needs to be researched.
  

• A new option in the Extras menu 'Most Popular Prisons' lets you view the most popular Steam Workshop prisons. You can choose to view the most popular over the last week/month/year/all time. Play the prison instantly by clicking Play. 
• We are now bundling 10 of the best community made prisons with all versions of the game. These are designed for times when you have no internet connection, or are not running the Steam build (so no workshop access) 
• You can now attach a Phone Tap to the Secure vistation booths added in Update 3. This will give you more intelligence on contraband, escapes etc.
  

• Ukranian, Bulgarian, Traditional Chinese