Prison Architect: Edition

Start up the map Iron Fort in Prison Warden mode. I chose County difficulty. You need to specifically enable the Prison Gangs setting (this makes the difficulty "custom").

This map has a mirrored layout so you can do this either on the right or left side but at the far edge there is a small self contained area with some cells, a shower, cleaning, common room, yard, laundry, canteen and kitchen. Assign these rooms as SuperMax sectors by going into Prison Running > Security Sectors.



Now increase your intake of prisoners in Reports > Intake, take in as many medium and maximum security prisoners as you can for a few days. Keep tabs on the menu Prison Running > Prison Gangs to see how many of the prisoners that come in are gang members. Minimum security prisoners have a much much lower chance of yielding gang members than maximum security prisoners do so don't bother with them.

Once you have several prisoners from the same gang in your prison assign them to the SuperMax security level by pressing on them to bring up their menu and go to Security. I had 5 members of the same gang on Day 4.

Now change the regime for SuperMax so they spend all day in the yard, they should take over the yard once there are five of them in there. If your gang members are stuck in solitary or lockdown just disable all punishments in the Reports > Policy screen. Press to evict the gang from the area. Send in riot guards from the Emergencies menu to take back the yard from the gang members.

Thanks to Larvi for the basic strategy they posted as a comment to another solution.

This map is also offers opportunities for the rioting achievement as it seems large-scale riots occur often on it. I had 50+ prisoner riots twice before day 7.

Start up the map Iron Fort in Prison Warden mode. I chose County difficulty. You need to specifically enable the Prison Gangs setting (this makes the difficulty "custom").

This map has a mirrored layout so you can do this either on the right or left side but at the far edge there is a small self contained area with some cells, a shower, cleaning, common room, yard, laundry, canteen and kitchen. Assign these rooms as SuperMax sectors by going into Prison Running > Security Sectors.



Now increase your intake of prisoners in Reports > Intake, take in as many medium and maximum security prisoners as you can for a few days. Keep tabs on the menu Prison Running > Prison Gangs to see how many of the prisoners that come in are gang members. Minimum security prisoners have a much much lower chance of yielding gang members than maximum security prisoners do so don't bother with them.

Once you have several prisoners from the same gang in your prison assign them to the SuperMax security level by pressing on them to bring up their menu and go to Security. I had 5 members of the same gang on Day 4.

Now change the regime for SuperMax so they spend all day in the yard, they should take over the yard once there are five of them in there. If your gang members are stuck in solitary or lockdown just disable all punishments in the Reports > Policy screen. Press to evict the gang from the area. Send in riot guards from the Emergencies menu to take back the yard from the gang members.

Thanks to Larvi for the basic strategy they posted as a comment to another solution.

This map is also offers opportunities for the rioting achievement as it seems large-scale riots occur often on it. I had 50+ prisoner riots twice before day 7.

Easiest way I found to get this was to start a new map on county with Gangs Enabled. Gangs members are most often Max prisoners so create a prison and intake about 10-20 Max Security Prisoners at a time. Make sure you have intelligence researched so you can look at your Prison Gang info.

From there what I did was create a second smaller prison building that had about 6 improved cells (quick build) a canteen/kitchen and the yard between them. Make that smaller prison a Min Security Prison area.

[Cells] -- [Yard] -- [Canteen]

A yard having objects in it will be a Gang Interest. Now once you have that built look into your Prison Gang info and see what gang has the most members, you'll need about 5)6 members. Pick the largest gang and switch all members to Min Security so they will be placed in the smaller prison.

Then once you have enough Gang Members set the routine that after they eat they have to head out to the yard and make sure no guards or other gangs are in there. Once all the Gang members you want are in the yard manually lock all the doors so they can't leave. They will passively claim the yard because they have enough members in that area. Once the icon changes to their gang symbol you can send in your guards to claim it back.

Now normally you would have to wait to have at least 10 members in a gang to get a Leader who would make the decision to claim that area. However this way you don't have to wait to get that many gang members. Bonus about this method is because they didn't actively want to claim the area they didn't try to fight my guards when I sent them in to claim the area back.

Hope this helps and happy hunting!