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  • World of Warcraft
  • 544,031 Monthly Downloads
  • Supports: 5.4.8
  • 19,877,644 Total Downloads
  • Updated 07/10/2014
  • Created 06/06/2009
  • 9,515 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.

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 <>
2014-07-10 21:36:39 -0500


    - -Fixed issue where rare mobs and beasts would not be enabled on login/reload
    - -Added delay timer to vignette alert
    - -Fix for tab tooltip enable/disable state not matching actual state
    - -Fix for options not saving off state
    - Fixed error on mouseover when in pet battles.  Ticket 63 Increased the delay before re-showing an alert when triggered by a mouseover to 5im (was 15 sec)
    - typo
    - Fix for Bro'Gaz the Clanless setting him as a non achievement mob
    - Added toggle option for mouseover alerts to option menu Moved some alert option from the search page to the alert page Added mouse over alert check if mob is alive before triggering alert
    - added code to trigger alert on mouseover updated debug code to update debug frame when new debug message is added Updated how saved variables are handled to help when adding new variable and to prevent saved variables from being reset when the addon does not load completely. cleaned up vignette code
    - Updated the  5 Madexx localizations to include the color of the spawn.


First Previous Page 5 of 148 Next Last
  • #2785

    The localized name for 'Portent' isn't in the enUS locale file (at least - didn't check any others). If you're feeling brave 8^) go into the addon folder, then edit Locales/Locale-enUS.lua (or whatever your locale is) and add

        ["50843"] = "Portent",

    into the list with the others, and it'll be fixed.

  • #2781

    I HAVE PROBLEM, HELP PLS! I put NPCScan in Addon file, and in game it works, but only thing that doesnt show is search.... so its bassicly not working any help?


  • #2780

    Fantastic tutorial here for anyone having trouble:;feature=iv&amp;src_vid=Z7jgbc_WfYE&amp;v=UCuhrlBO_eo

  • #2778

    This addon had the greatest sound alert ever: Zoidberg wooping! It was working just fine until maybe a little over a week ago approximately. I re-installed the add-on but it's still gone.    ):  Was this taken out intentionally? Should I install an earlier version? I really loved Dr. Zoidberg's constant wooping's, they hit pretty close to home. A fix would literally make my day, thanks!!



    Edit: Doh'!!! I messed up. It was coming from VanasKoS!  I had it disabled on one of my accounts! I always forgot 'VanasKos' was in front of "zoidberg woop". Selective reading, I guess. But it's cool that it imported the sounds from VanasKoS! Very cool!

    I reccomend if you want an addon that constantly spots friendly and enemy players as they load in, and a neat little blacklist and alarm, plus a zoidberg bonus alarm to NPCscan, I reccomend you also get vanaskos, it's radical as f word!

    Last edited by Kornesczuk on 3/27/2014 7:23:14 PM
  • #2779

    NPCScan has never included any alerts and uses in games files for its  default alerts.  It was most likely part of another addon that used LibSharedMedia also.  Check any addons that you recently deleted/disabled and you'll likely find the source of the sound file.

    Last edited by SLOKnightfall on 3/27/2014 7:11:57 PM
  • #2776

    What si teh range of NPC_Scan and is it automatic?

  • #2777

    The range is when the mob gets loaded into the game cache or when the game triggers a Vignette event (The rare mobs that display an icon on the minimap).  I believe that is is usually a radius of 80 yards arround the character, but can be larger/smaller.  The alert is automatic and will trigger if the mob is not in the game cache or if you have Vignette tracking enabled via the options menu.

  • #2772
    NPCScan In-game cache clear

    Ok so what's the deal with not being able to clear the cache in game.  Check boxes?  Selecting what mobs you want to clear, or a clear all to renew the whole thing.  Even if it required a UI reload it would be worth it. Such a simple feature can't be implemented easily?  I find the addOn useful *if* I remember to clear the cache b4 I start to play, which is never. 

  • #2775

    Just start the game with this batch file:

    REM The next line deletes the creature cache
    IF EXIST "C:\World of Warcraft\Cache\WDB\enUS\creaturecache.wdb" DEL "C:\World of Warcraft\Cache\WDB\enUS\creaturecache.wdb"
    REM The next line will start World of Warcraft
    CALL "C:\World of Warcraft\World of Warcraft Launcher.exe"

    This assumes that you have the game installed to the default location. Copy and paste the above text into a text file and name it   WoW_Creature_Cache_Clear.bat  or whatever. Save it somewhere safe on your hard drive and make a desktop shortcut to it. Right click it and click properties, then click Change Icon. Navigate to your WoW folder, select Launcher.exe and choose the default WoW icon. Click OK and OK again. Done!

    Now, when you start WoW with this shortcut, your creature cache will be deleted and WoW will start. If you don't want to clear the cache, click the normal WoW shortcut instead.

  • #2773

    It's actually an impossibility - the AddOn environment is completely sandboxed; there is no way for it to read or write to the filesystem.

  • #2771

    Great Job!!! I love the addon, it has made my life a lot easier farming mounts and such!!!


    One small enhancement I'd like to sugest.... since you end up basicaly registering all rare spawn via all the users that the addon has... cant you submit that information to a central page, with the realm name, and the server time??? That way, this could help to people farming a particular rare, on a particular server... so you would know if it has just spawned, or if it has been a while... (Maybe placing an option to the users to submit their rare findings information to a central site so they can agree on submiting information... or have an export feature that would export the users rare findings information, so THEY can submit it to the page - to avoid information disclosure fears/issues).



  • #2774

    The AddOn system has to network communication capabilities, nor can it write to the filesystem on-demand for a third-party application to detect and transmit.

  • #2769

    how do i instal this i have downloaded it and dident find the addons button i have cata.

    do i need MoP???

    plz respond

  • #2770

    How to install an addon

    Only having Cata should not be a problem if you are playing on an official Blizz server.  If you are playing on a private server, then it probably will not work, nor will support be given to make it work on a private server.


  • #2767

    I have tried numerous times over the past year to be able to get NPCScan to work and have given up. Once again I have tried today with no success.

    I download Curse Client.

    I downloaded NPCScan and Extracted the files.

    I deleted all 3 UI files and Logged off/on.

    On my WOW screen I do not see any hint of any controls for NPCScan. No buttons, No place to enter a NPC rare code. Nothing in the Interface or system tabs.

    So what am I missing or doing wrong?

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