I’m trying to make sure that my upcoming purge only targets my main base and not any of the outposts I have. If I build solely with pillars and ceiling pieces ie NO foundations will that still be eligible for the purge?
@CodeMage or @Taemien or anyone else that really knows the game? Sorry to harass you but My metre is nearly full and I’m at the stage where I’m ready to rip all my outposts down to ensure this thing hits where I want it to.
I don’t actually know the answer to that, but I can suggest how to find out safely. Start a singleplayer game, make yourself and admin (so you can fly and build easily), and build two bases: one normal and one with no foundations. Use the console commands to start a purge and take note of which base it targets. Use the console commands to end the purge (or defeat it by killing everything in it). Rinse and repeat until the purge either targets the no-foundation base, or until you’ve done it enough times to feel confident that your no-foundation base is safe.
I’m sorry that I don’t have a better answer, but maybe @Multigun, @Testerle, or @Taemien know.
Also, it might be worth trying to ask that question on the modders’ Discord? Perhaps someone there knows.
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Thanks so much for the quick response. That’s a perfect idea. Giving that a go right now. Thanks mate 
I dunno much about purges other than they can be finicky and unpredictable. In my experience they usually ignore my outposts and hit my main base. But I couldn’t explain why that is.
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If I remember correctly if you’re building doesn’t have a high enough score it will not be targeted but I forgot what the score number was at minimum to be targeted. But that’s why.
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There is a wak video showing how to build to avoid the Purge. I think it’s Pillars and etc used. However, in the last dev stream they said they were improving the Purge targeting in 2.4 (there are a few references to the Purge in the Testlive patch notes that reflect that too).
So it’s probably safe to assume that old strategies to avoid the Purge won’t be working real soon. The only other thing I can think of is the Convergence Trap. I’ve never used it or tested it, but I believe when you fill it up, it will force the Purge to target the base where the trap is located.
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I have some watching to do lol, I have no idea why a convergence trap is 
I don’t know how I missed Wak’s video, I’m a fan he makes some good guides. Thanks for replying mate
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Thanks everyone for you’re help, it looks like theres going to be more to it than I thought. I used to have all my outposts bristling with thralls but when they announced the thrall limit I jumped the gun and fired nearly everyone lol 
all my outposts are basically undefended so it’s homework time to sort out how to get the purge where I want it.
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I just read something similar. Going to do this every 15 mins which is the purge timer reset. I’ve pretty much emptied my outposts too so if it hits one I’m only losing building pieces which is easy enough to farm back up.
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@Darkzombie ,Sorry for the delay , if you want on consoles to guide the purge place a great wheel of pain to the area you want to accept purge , a named taskmaster and lead all your thrall farming only to this wheel . On consoles purge hits most on wheel of pain . Don’t forget that you can travel on map rooms with the captured thralls but … you have to be very careful not to loose the thrall by climbing . You can still find the thrall but you have to travel with the map room again and come back to the place that you loose it by climbing . 99% you will accept purge to the point that you want to .
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Thanks @stelagel i have removed all the wheels of pain from my outposts so the only one I have left is at my main base. My metre is full however I just helped another player with their purge on my server so I don’t think I’ll be getting it tonight. Cheers for the advice mate
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@Darkzombie ,Good luck m8 , I wish to you a human purge and to get blacksmith and Armorer . I know that in a short time they will be useless still the feeling of gaining them is awesome .
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Do purges have a required build size? If they do, then your outpost needs to be smaller than that size.
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It’s a Siptah-specific placeable that can be used to empty your purge meter or to summon a purge. It can only be crafted on Siptah, and it’s fueled using the eldritch monster essence you can find only on Siptah.
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So I took @CodeMage advice and used single player admin to test the purge and thought I’d post my findings here in case anyone else reading through was curious. I built two identical structures, one with pillars and ceilings as a base and one with foundations. I did various scenarios including swapping which base was first erected and built the second both within and well outside of the original land claim. I found over 30 forced purges that if you build within your original land claim than it doesn’t matter how big the second building is, it will be eligible for purge. When built outside of original land claim it didn’t matter which base I built first the purge targeted the foundation base every time. Thanks for the suggestions guys hope this helps someone else.
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Of course, this game and purges in particular are a bit finicky so others may experience something else entirely. Peace 
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Lol why do I get a Pac-Man for a peace sign
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I’ve been a dedicated server admin for two years and enjoyed a lot of tests with logs/dabatase values as backup. I’m not a dev so there may be some errors due to asumptions in the following, but the result is still valid.
As I will talk about the core mechanics, be warned this could be a spoiler for some.
And sorry if it’s hard to read, english is not my primary language. ^^
About the buildings :
• Setting a foundation will generate a “base ID” in the database that will group all the building pieces associated to that first foundation.
• This first foundation carries the location/coordinates of the whole group (if you’re trying to settle at a specific place for purges, this is the one that prevails).
• Using a pillar then ceilings/walls/… will not generate this kind of base ID.
• If you have the second kind of building, adding later a foundation/fence foundation/tree foundation (dlc) will generate the base ID for the whole group
• Once a building belongs to a base ID there is no way to dissociate them, even demolishing every foundations.
About the purge :
• It will only target buildings with a base ID.
• Your bases have a score that seems to be related to the decay score (can be shown with a server setting)
• Each type of building pieces have a different value. Be aware that walls worth a lot more than foundations. Also higher tier may be worth more, I don’t remember this part.
• There is a minimum score for base to be eligible. And this min score varies throught the map (I think starting zones have an higher min score, meaning you need a bigger base to trigger a purge)
• Purge’s target “feels” random with a weight factor. The higher score a base has, the higher chances it has to be the target. But smaller scores still can be targetted sometimes.
The way I usually play is the opposite as you do, and it always works.
- My first base is foundation free. This way there is no purge untill I’m ready.
- I find a place I like and settle my main base foundation free. (It means you will never add a foundation even temporarily to raise or lower the floor, else it will create a base ID and make that base eligible) I made really huge bases with every kind of workbenches and never had purges on them.
- i create a temporary/mobile outpost with foundations and one enclosed wheel of pain to trigger purges depending of the kind of purge I’m looking for. This is the only building that gets targetted by purges.
A little word for admins, using the foundation free building (with no base ID) doesn’t create a situation where the server fails repetitively to start a purge. This building is simply not eligible for purge as if your purge jauge were full and you had no base at all.
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Thanks for clearing this up with much more clarity than I would have been capable of @Landumir.