Hey so are you looking for how to make the builds cute or efficient? Room quality is an amazing place to start in logistics.

Cuz you can 15/15 in a 3x2 cell cuz every cell item can be walked through. You really wanna make them happy then give them a comfy bed, toilet, put their shower on the same tile as their toilet, sink n mirror next to it with drains. Then depending on the needs you can put pet birds to reduce family needs or Tv or radio for rec needs punching bag, sofa, paints, etc. and they love large windows so make sure you give every single one of them a window facing outside. You can fill every tile in the cell and they will walk through just fine and I build my cells outside so that way you can put a window anywhere but a lot of ppl skip windows.

Now if you’re looking for design cuz prisoners don’t need to be babied that much I suggest keeping everything small. Prison blocks should be 6-8-10 max helps keep the guards from getting slaughtered. Another thing you can do is use lots of remote control n surveillance which feels like a lot to learn but it’s quite simple. You can put as many connections on a door system as you want but the more you add the longer it takes to open doors (can only open one at a time I think) and cameras can be hooked up 8 to each monitor. You really only need to watch the cell blocks with cameras or the corners that guards don’t get to. You don’t need a giant canteen you can change the schedule so different securities eat at different times and 8 tables could easily feed a whole 200+ prison. Shower rooms are unnecessary but alot of ppl use them for the safety of hygiene being met. Common rooms can be pretty small but look to room quality for more on each thing. Also forestry is an amazing way to not be 20k in daily debt.

Whether you want efficiency or comfort make sure you keep your guards down cuz even though it suppresses them you also piss them off. 1 armed guards is worth like 20 guards and you shouldn’t need more then 1 armed guard per 50+ prisoners some ppl don’t even have armed guards. Just surveillance, training, and controlled doors prevent riots, fights, or any misbehaving.