Prison Architect

Prison Architect

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finding tunnels
its pretty infuriating. i have dogs patrolling all possible directions from any toilet and still sometimes a tunnel will get through.
or worse they spot a tunnel but then my incompetent guards canot find the entrance no matter how many times i click tunnel search over and over again.
i just want to yell "rip every last toilet out of there until you find this ♥♥♥♥♥♥♥ tunnel"
i feel like the dog warden is almost essential for larger prisions.
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Showing 1-15 of 19 comments
gtgiygus May 13, 2020 @ 3:14pm 
Originally posted by cylordcenturion:
its pretty infuriating. i just want to yell "rip every last toilet out of there until you find this ♥♥♥♥♥♥♥ tunnel"
i feel like the dog warden is almost essential for larger prisions.

TL; DR: If you didn't know, deconstructing a toilet will auto-reveal any tunnels connected to it. I also believe there is a bug right now that messes up tunnel searches. The guard will only ever find the tunnel if prisoner is currently digging in it right that moment when they search, unless you deconstruct. If you want to be "gamey" about it, build a toilet on the flag itself, then deconstruct it.
But to be honest, the only other warden worth taking is the one that decreases prison temperature, so using the Dog warden all the time is a perfectly acceptable way to play.



The best way to deal with tunnels is to build your cell blocks with a one tile wide, no foundation lane between the blocks. Then have a dog patrol just that area and around the outer edge of map across from cell blocks. So long as the prisoners are far enough away from the map edge, you should find them in time.

Prisoners always take the quickest path to map edge when digging (path of least resistance). Once you understand the reason prisoners will dig where they do, you can make an educated guess as to where the tunnel must have started. The little dog flag is basically just a clue for you. Deconstruct those toilets directly in line with the flag, moving INTO the map, away from outer edge. If the toilet the tunnel starts at was OUTWARD from the flag, the dog would have flagged at least that much further away, not farther in, since the prisoner is digging OUT to the map edge. Prisoners will only ever dig "INWARD" to get around foundations, then straight back "OUT" again.

Also, remember that prisoners need digging tools. If you build a search point (both dog and metal detector) before they can enter the cell block, you will find a lot of the digging tools, slowing the rate of tunnels overall.
Last edited by gtgiygus; May 13, 2020 @ 3:24pm
pipe May 13, 2020 @ 10:25pm 
Best way to stop tunnels is to stop contraband
cylordcenturion May 14, 2020 @ 8:05am 
for real? ... that would explain a lot.
ok, so I started a new prison yesterday, after a long break with Prison Architect.

After playing for quite a while I noticed that I haven't found ANY tunnels yet (nor did anyone escape through tunneling), despite several shakedowns and tunnel searches and dog patrols. So I was suspecting some bug, or mod interference, or changed game mechanics, since I played last time was 2 years ago or so...

I thought maybe because all my cells are quite far from the edge of the map and I was just about to build some cells near the edge to test if they would build tunnels then.

Long story short: Just now a couple of people escaped through a tunnel, which they digged over quite a long distance.

So it seems there is indeed some bug in tunnel detecting...
The Stranger May 17, 2020 @ 4:44am 
Also, there are percentages on what options finds tunnels.
Clicking on the Toilet and chosing "Search" will detect it 100%.
Using Search Cell is like 75% or something.

Also, I have a perimeter wall set up outside the prison with just K-9 patroling it. Always finds the tunnel before they reach the wall.
Originally posted by The Stranger:
Also, there are percentages on what options finds tunnels.
Clicking on the Toilet and chosing "Search" will detect it 100%.
Using Search Cell is like 75% or something.

Also, I have a perimeter wall set up outside the prison with just K-9 patroling it. Always finds the tunnel before they reach the wall.

Yea ok, but I was like playing for 10+ hours, several shakedowns and tunnel searches (both which searches toilets), and nobody found anything, also no detecton of tunnels by dogs.

Until a very long tunnel was revealed after a successful escape. Turned out the tunnel started from 10 toilets. And that several searches of these toilets didn't reveal anything looks like not right to me.
The Stranger May 17, 2020 @ 5:23am 
Hmm. Soudns suspicious.

I'd always chose the "Search" option manually, even if that takes ages, it always works.

ALSO. If you have Gangs on, you can't search these toilets unless you move the prisoner out into another cell! That happens with Search Cell Block, too.
groovybluedog May 25, 2020 @ 8:31am 
Also came here just to search for this. Definitely a bug. I have 4 toilets in the dormitory which is in the corner of the prison, and someone builds a tunnel. Even though the dogs picked up the signs, whenever I send guards to check the toilets, they never seem to find a tunnel until I continue searching at least 20+ times. Isn't searching a toilet supposed to be 100% certain that any tunnel from it is revealed? ♥♥♥♥ sake Paradox.
By the way, for me the problem seems to be gone. First 10+ hours of my current game I didn't find any tunnels, now it happens again on a regular basis.... weird.

Just an idea: in my case it was after some prisoners made a successful escape by tunneling, I removed then that tunnel and since then the detection of tunnels seems to work... maybe its after the first revealed tunnel or so that it starts working?!
Last edited by ☭ Little King Trashmouth ★; May 25, 2020 @ 12:49pm
groovybluedog May 26, 2020 @ 2:43am 
Definitely not the case, I've had 20+ tunnels and still do not detect tunnels from toilet searches
The Stranger May 26, 2020 @ 3:00am 
I have a "Tunnel Search" icon in the bottom right, where I can call for backup.
Not sure if it's a mod or part of the game, but that searches ALL toilets and always finds tunnels.

Since Click on Toilet -> Search has a 100% chance of finding tunnels but is a ♥♥♥♥♥♥♥ chore to do one by one.
It also searches the gang-toilets without having to mvoe the prisoners.
cylordcenturion May 26, 2020 @ 3:01am 
tunnel search 100% does not always find tunnels
The Stranger May 26, 2020 @ 3:43am 
Originally posted by cylordcenturion:
tunnel search 100% does not always find tunnels

It does. There is a topic on this forum somewhere where someone listed all the percentages.
And I always find tunnels 100% if I use that function.
groovybluedog May 26, 2020 @ 6:56am 
Originally posted by The Stranger:
Originally posted by cylordcenturion:
tunnel search 100% does not always find tunnels

It does. There is a topic on this forum somewhere where someone listed all the percentages.
And I always find tunnels 100% if I use that function.

I think you're missing the point, yes, it's fact that a toilet search is SUPPOSED to always find tunnels, but as myself and others have indicated, this is currently buggy for a lot of people, including several who confirmed similar issues on Reddit.

It seems hit and miss between it not working at all unless you deconstruct the toilets, sometimes working, working after a certain action or amount of time, or always working, but either way these differences didn't exist with tunnel searches the last time I played PA when it was owned by the original devs, so seems to be a bug Paradox has bought in.
The Stranger May 26, 2020 @ 8:09am 
Originally posted by groovybluedog:
Originally posted by The Stranger:

It does. There is a topic on this forum somewhere where someone listed all the percentages.
And I always find tunnels 100% if I use that function.

I think you're missing the point, yes, it's fact that a toilet search is SUPPOSED to always find tunnels, but as myself and others have indicated, this is currently buggy for a lot of people, including several who confirmed similar issues on Reddit.

It seems hit and miss between it not working at all unless you deconstruct the toilets, sometimes working, working after a certain action or amount of time, or always working, but either way these differences didn't exist with tunnel searches the last time I played PA when it was owned by the original devs, so seems to be a bug Paradox has bought in.

Ah, alright. I thought you meant it wouldn't work in general.
I actually haven't had that issue in the latest version.
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Date Posted: May 13, 2020 @ 8:07am
Posts: 19