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  • World of Warcraft
  • 638,487 Monthly Downloads
  • Supports: 5.4.8
  • 20,815,475 Total Downloads
  • Updated 09/21/2014
  • Created 06/06/2009
  • 9,691 Favorites
  • Project Site
  • Comments
  • Release Type: Release
  • License: GNU General Public License version 3 (GPLv3)
  • Newest File:
Support development! **

About _NPCScan

_NPCScan & Warlords

Due to changes in how the game caches mobs in WoD, it is looking like _NPCScan will no longer be able to auto detect non-Vignette mobs. Due to this the only way to find pre-MoP rares via _NPCScan will be via mouse over or the new dynamic target macro keybind being added. The new keybind will trigger a /targetexact …” macro that updates with tracked mobs based on the zone you are currently in. Vignette mobs will still automatically trigger an alert when the mob gets in range, and should work more reliably due to updates to the Vignette API.

_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 <>
2014-09-21 01:07:39 -0500


James D. Callahan III:
    - Added global Show Alerts As Toast option; displays the alert text as a persistent (and dismissible) toast rather than printing it to the chat log. Defaults to enabled.


First Previous Page 60 of 151 Next Last
  • #1881

    I was wondering if it would be possible to add some of the rare wild pets to NPC Scan? Like the Minfernal, Scourged Whelpling, Dancing Water Skimmer, Molten Hatchling, Tiny Twister just to name a few. It would make hunting them down soo much easier!


  • #1877

    I've deleted the cache folder multiple times and have tried the procedure Omrakos outlines in the thread you linked (a WoW folder wasn't located there), but still cannot clear my cache. What could be wrong or what else can I do?

  • #1879

    all you need to do is completely close wow then under your start menu go to find file and type in creature. it will find the creaturecache and you right click on it and delete. then re open wow.

  • #1883

    thats weird because i only ever have to delete the creaturecache

  • #1880
    Quote from alarris »

    all you need to do is completely close wow then under your start menu go to find file and type in creature. it will find the creaturecache and you right click on it and delete. then re open wow.

    Almost, I had to Start>Search>No Results found at first>click Computer icon>Delete BOTH creature files it found and it finally worked!

    Deleting the entire Cache folder didn't work, but this did ... hmmm

    Last edited by Stugotz on 10/9/2012 9:48:55 PM
  • #1876

    Adding the ability to detect objects in another cache folder would be great, considering the BOA items in MOP these days.  Just a thought.  Not sure if it's possible.


  • #1874
    regarding pandarian rares

     im wondering have you updated for pandaria at all saiket? its not showing any of them on the search /cache list and its showing no overlays for them even though i am in the area it travels. if you have done this whats wrong with mine that it wont show the overlay? if you havent added this then when do you think you will? im a hunter and would like to tame the rares in pandaria and that is difficult without an overlay to follow to find the tracks.

  • #1872

    Awesome addon, thank you! I never noticed rares before while flying so this is great.  Is there any way to make it such that it won't trigger for dead rare mobs? I just saw the description here saying that if it found the dead mob, it won't alert you when it sees the mob again even though you never killed it, unless you clear your cache, which is another reason why it would be great if it just doesn't register or show dead mobs. Thanks!

     Also a suggestion: If you could show in that little box that has the npc name and their avatar what achievement this would help you progress with, that would be awesome! thank you.

    Last edited by wahmeya on 10/6/2012 5:00:18 AM
  • #1870

    It's showing up rare Mobs for the "Glorious!" Achievement that I have already killed, any way to disable this?

  • #1878

    Yes, you have the option of going into the /npcscan database (IN GAME) and manually deleting the mob ID from your cache file so that your scan does not pick up the mob anymore, even if you clear your cache file after finding dead mobs.

    You'll have to manually add it back though if you wish to search for it again for any reason.

    Just type /npcscan in your chat bar and go under the Glorious! tab and delete the ones you've already found.

  • #1868

    What does this thing keep going off when the target is dead? Also, the fact that we still have to physically delete a file for this thing to be current is complete crap.

  • #1871

    Nothing saiket can do to change the fact we need to delete the file. Please read the description and be a little more nice in your comments as no one is paying him to keep this updated.

  • #1867

    Is it possible to add an object rather than a mob to the database (ie. golden lotus?)

  • #1866

    I am having issues with the scanned comming up and the rare spawn is already dead, is their a way to shut this off so that it will not pop up if the rare is already dead.

  • #1869

    I came here for the same reason.

    The addon works that if it can /target the rare then it will warn you and it doesn't check the health % of said rare.

    My question to the mod maker would be if there was a way to put an option that you can able/disable (for whatever reason you need it in disabled) that it will check the % of the rare if it is 0% then it will not warn you anymore?

    (Just an idea)


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