How long is one year in Prison Architect in terms of

  • game days
  • real life minutes when played at normal speed

Bonus points if you know the ratio between normal speed and max fast forward speed.

2 Answers 2


As stated in the release notes for version 19, and assuming it has not been changed since:

... one year sentence = 120 game hours (5 days)

In real time that is 2 hours because 1 game hour = 60 real seconds, but only for a small map.

If you look in the save game file for medium and large maps a TimeWarpFactor is added, with a value of 0.75 and 0.5 respectively, which changes how fast time passes.


            Game hour Real minute    Game year Real time
            --------- -----------    --------- ---------
Small map:      1    =    1m             1    =  2h 
Medium map:     1    =  1m:20s           1    =  2h 40m
Large map:      1    =    2m             1    =  4h

So when played at normal speed one game year can range from 2 to 4 hours depending on your starting map size.

As to the increased speeds on a small map, the >> speed is about 30s to one game hour (2x) and the >>> speed is about 12s to one game hour (5x). So you can divide down the times given above as appropriate.


According to a similar question on Steam, one year is:

120 in-game hours, which is 5 in-game days.

120 hours is equivalent to 7,200 minutes in game minutes. Sadly, I don't know the ratio.

Source: https://steamcommunity.com/app/233450/discussions/0/620695877214051786/


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