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  • World of Warcraft
  • 499,800 Monthly Downloads
  • Supports: 5.4.8
  • 20,493,305 Total Downloads
  • Updated 08/25/2014
  • Created 06/06/2009
  • 9,631 Favorites
  • Project Site
  • Comments
  • Release Type: Release
  • License: GNU General Public License version 3 (GPLv3)
  • Newest File:
Support development! **

About _NPCScan

_NPCScan tracks seldom-seen rare mobs by proximity alone, making the old “/targetexact …” macros obsolete. It has the same range as those targeting macros, but you won't have to mash any buttons. Just go about your business and let _NPCScan alert you when it finds something.

V5.x Changes
  • Due to changes in how the addon stores data, some settings might get reset when updating.
  • The default alert is suppressed while on flight paths by default. If a mob is found, the whisper sound effect will play and the mob & location will be placed in the chat log. You can turn this off from the settings.
  • _NPCScan now includes all rare mobs in the game.
  • The "One of Many", "Timeless Champion" & "Champions of Lei Shen" Achievements have been added.
  • Rare Mobs and Tameable Mobs have their own tabs now.
  • Custom mobs have been added for the Ghostly Pandaren Fisherman & Craftsman.
  • Individual mobs can be removed from their tabs to stop tracking them.

If you have a question check the FAQ, or a problem create a ticket

If you have a question/comment about _NPCScan.Overlay please post it in it's comment section.



NPCScan now tracks "vignettes". These are the little skulls appear on the minimap, that denote rare mobs. This is a beta feature and is disabled by default. Enabling this feature will alert you to a rare that's within minimap range, without any worries about having to clear your cache. When you get an alert you will be shown a target button similar to the standard mob alert, letting you know that a vignette mob was detected. Clicking on the target button will try and target the mob. Once a mob is targeted, the target button will update to reflect the mob found.

Known Issues: Currently there is no way to detect what mob the vignette represents. Because of this there is no way to filter out and ignore individual mobs. The vignette tracking will ignore achievement mobs groups that have their tracking turned of via unchecking their tab. Also the targeting button might have some issues if there are more than one vignette mobs in target range and may not work 100% of the time.

The Cache

This addon doesn't use nameplates or mouseover units to find rares. Instead, it checks your creature cache for the moment a rare mob is found. There is one catch to this technique however: Once a mob is “found”, _NPCScan won't be able to find it again until your cache is clearedf you find a rare mob's corpse—Dirkee for example—you would have to clear your cache before _NPCScan would find Dirkee again. Thankfully, clearing your cache is a safe and simple matter.

Clearing Your Cache

To clear your cache, follow these straightforward steps:

  1. Exit World of Warcraft
  2. Delete the “Cache” sub-directory inside your World of Warcraft folder.  For example on a standard Windows XP installation, you would delete the folder “C:\Program Files\World of Warcraft\Cache”.
  • Advanced users can delete “C:\Program Files\World of Warcraft\Cache\WDB\enUS\creaturecache.wdb” specifically to improve log-in times, where enUS is your language code.

Note: Windows Vista and Windows 7 users see this info if your cache isn't in the location above.

That's it. Log in after you've done that and you'd be able to find Dirkee a second time. It's completely safe because WoW will recreate your Cache folder after you log in again.

Cache Warning

If a rare mob is already cached when you log in, _NPCScan will print a warning message with the names of those mobs. If you see this message but still want to find the listed NPCs again, it's time to clear your cache by following the above procedure; Otherwise, you can quit searching for those mobs using the Search options window detailed below. You can suppress this log-in message using the main options pane, as well.

“Found” Alert

When a rare mob is found, _NPCScan alerts you by playing a loud and distinctive sound, making your screen pulse red, and displaying an animated Targeting Button. To get a feel for what this alert looks and sounds like, try the “Test Found Alert” button in the addon's main Interface Options panel. (See the Options section below.)

Targeting Button

When clicked, the targeting button tries to target the most-recently-found mob.  You can also bind a key to hit this button. If the default button position isn't to your liking, you can move it while holding your CTRL key.

Note: The button cannot be shown during combat. In the unlikely case that you do find a rare while fighting, the button will appear after you leave combat. You will still hear the alert however, and the name of the mob will appear in your chat log.


_NPCScan's main options window can be accessed from the Interface Options menu. This panel includes a “Test Found Alert” button, various ways to customize the alert sound, and an option to suppress cache warning messages on log-in. New sounds can be added to the alert sound dropdown menu by installing SharedMedia-type addons.

Search List

The list of mobs that _NPCScan searches for can be modified easily through the Interface Options panel, however it comes pre-configured with most rare Outlands and Northrend mobs.; To access the mob list, type “/npcscan”. Grayed out NPCs in a list aren't being searched for, either because they're cached or not needed for their achievement.

The first tab available lists Custom NPCs that you can enter or remove manually. NPCs that are already cached show a red “X” in the first column. You can add or remove Custom NPCs with the [+] and [-] buttons at the bottom right.

All other tabs control achievements like Bloody Rareand Frostbitten. These tabs show an additional column on the right with green check marks for completed achievement mobs. You may enable or disable tracking each achievement with its tab's checkbox.

To remove non custom mobs from a tab, click on the mob that you want to remove and then click on the "Remove" button. This will remove the selected mob from the current tab and add it to the Ignore List Tab. If you ever want to restore a Ignored Mob, select it from the "Ignore List" tab, click the "Remove" button and it should be added back to its original tab.

The “Search for completed Achievement NPCs” checkbox at the top left of the pane allows you to keep looking for mobs you no longer need for achievements.

Finding NPC IDs

A mob's NPC ID is its unique identification number, and it can be found on sites like WowHead or WowDB For example, search for the mob “Dirkee” on WowHead and go to the mob's page.  That page's URL will look like

32500 is Dirkee's NPC ID.


The only problem mobs for _NPCScan are tamable beasts & Battle Pets. Whenever you run across the tamed version, _NPCScan gets tricked into thinking that mob is nearby. In order to prevent those false positives, _NPCScan only shows alerts for tamable mobs in their original zones That is, if you spot Loque'nahak in Dalaran instead of Sholazar Basin where it usually patrols, _NPCScan would ignore it. When one of these tamable mob false-alarms happens, you'll see a message in your chat window explaining why it got ignored.

Since this makes tamable mobs are so difficult to track, I suggest you fly to the tamable mob's zone first, clear your cache, and then search for it.; Any time you pass through a populated area like Dalaran, you risk filling your cache with popular rare pets.

For Battle Pets there is no way for it to determine if a mob is a spawn or someone's pet. Many Battle Pet addons and just opening the Pet Journal will often cause Battle Pets to become cached.

James D. Callahan III <>
2014-08-25 19:12:48 -0500


James D. Callahan III:
    - Moved CacheWarnings option to global from per-character.
    - Cleanups
    - Removed commented-out code.


First Previous Page 112 of 150 Next Last
  • #1040
    My problem is solved.
    The main issue was that my curseclient didn't update the entire folder so I had a few remaining file from 3.3.5.
    So I deleted my _NPCScan folder and updated the newest release again.
    And voila, it's working again. :)

  • #1030
    I got this error on logging in. As seen by BugGrabber, English client.

    1x :":OnShow":4: attempt to concatenate local 'name' (a nil value)
    : in function `CreateFrame'
    _NPCScan-\_NPCScan.Config.Search.lua:24: in main chunk

    (*temporary) = "Button"
    (*temporary) = nil
    (*temporary) = {
    0 =
    (*temporary) = "GameMenuButtonTemplate"
    (*temporary) = defined =[C]:-1

  • #1059
    What does the cross means lol anyone can tell me
  • #1033
    WoW 4.0.1 isn't compatible with older versions of _NPCScan (you have still), so you'll need to upgrade to the latest version.
  • #1029
    I spent hours trying to find NPC id's and couldn't find: Example, Spirit Beast, Loque'nahak 76 Rare Elite Sholazar Basin . Its not in your current database.

    Is there a way to ADD without a NPC ID to _NPCScan? This is holding me up to add.

    #2: Do you have a current list of NPC ID's that you can make available to download? This would greatly simplify things to add.

  • #1031
    Easy peasy. Just search for the mob by name on Wowhead. Once you're on the mob's individual page, look at the number after the = sign in the URL. That's the NPC id. Here's an example for Loque'nahak. I went to and did a search for Loq. Once I clicked on the NPC page, this is the URL I got: The NPC id is 32517. That's what you put in the NPC ID field. Hope this helps.
  • #1032
    Thank you.

    Wouldn't it be great if there was a downloadable list with all the NPC id codes
  • #1023
    I am currently using the latest version of NPCscan ( and there seems to be a problem that starts to happen after patch. As you may know, hunters have an improvement on their stable slot mechanics, in that they can have 4 "active" pets and 20 "inactive" pets at level 80, tucked inside their stables. Now, even after clearing the cache before logging in, NPCscan seems to auto-detect whatever rares I have inside my "inactive" stable slot as soon as I log into the game (and haven't visited the stables). Of course, if I happen to log in on the zone where the rare is supposed to spawn, the warning siren will turn on. This happens even though I don't have any rares on my "active" pet slots.
  • #1025
    I can confirm this as of right now. I just noticed this on my server as of the new patch. I cleared cache and was sitting in Zul'Drak. As soon as I log in the sound goes off that Gondria is up, now I am sitting near one of the spots so I look around. It was then that I noticed that all of the spirit pets I have in the stables are listed. Was very odd to say the least.
  • #1024
    I hadn't heard about that change, so I made a premade hunter on the beta to test this. Sadly the beta is down for now so I can't log in. :(

    I think I might be able to stop bogus "Found" messages from showing up in this case, but I'm not sure. Also, I think this is going to make it impossible for hunters to scan for tamable mobs to kill once they've got one tamed.

    I'll try working this out once the beta servers come back up; Hopefully it won't take too long.
  • #1026
    Version will print a message listing cached pets from your stables on login instead of showing a found alert. It should also prevent bogus found alerts for pets you have with you (I'm not sure if this used to happen before or not).

    You can disable the message by turning off the "Print cache reminders..." option.
  • #1027
    I found somewhat of a workaround regarding this issue. Basically, if I move the already-tamed rares to the 2nd page of the stable slots (the second 10-slotter page), NPCScan will stop auto-detecting the aforementioned rares until you physically visit the stables and open it up (which is nothing different than the pre-patch behavior).
  • #1028
    Great tip! I was able to extend that so that only the currently summoned pet will get cached on login in version Your four other active pets and the first 10 stabled ones will get cached if you open the stables though.
  • #1018
    Hi. I'm looking for Time-Lost Proto Drake.
    How can i be sure that it is looking for it??
  • #1019
    And do i have to be in Like "Target range". So that i can se him on my screan?
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