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  • World of Warcraft
  • 551,632 Monthly Downloads
  • Supports: 5.4.8
  • 19,873,009 Total Downloads
  • Updated 07/10/2014
  • Created 06/06/2009
  • 9,512 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 82 of 148 Next Last
  • #1488
    the firelands (molten front) rares are not currently in the DB by default; you need to add them manually. the seven rares (and their IDs) that i'm aware of are:

    50815 Skarr
    50959 Karkin
    54321 Solix
    54322 Deth'tilac
    54323 Kirix
    54324 Skitterflame
    54338 Anthriss

    When adding them, if you click the dropdown, you can select "Molten Front" as the zone :)
  • #1483
    I can't seem to delete my cache. I'm not in a town and it's not npcs that you can tame, 'cause none of them are being cleared. I have tried tons of times and it just won't delete
  • #1484
    First of all, in order to delete your creaturecache you have to shut down WoW entirely, as in, log out, press escape a few times to kill the program. Check your processes in your task manager to be sure no launcher.exe or wow.exe are running. Then browse your hard drive to your world of warcraft install, and find your creaturecache.wdb(it should be in cache/wdb/enUS/creaturecache.wdb - replace enUS with whatever your localized version of the game client is). If this is NOT working, and you're on vista or windows 7, you may have an issue with the OS protecting certain files from being deleted. You may have to find out how to disable that, at least temporarily.
  • #1481

    how long will it take to add the new rar tamable spawns within the firelands/molten front?

    And: Is it possible when adding a new ID not only to set the world but also set the zone? Would be great. ;-)
  • #1480
    how close to the mob do i have to be before the alert activates?
  • #1479
    open a notepad and save this as a batch file:

    del "(drive)\(subdir)\(subdir)\World of Warcraft\Cache\WDB\enUS\creaturecache.wdb"
    "(drive)\(subdir)\(subdir)\World of Warcraft\wow"

    if your wow's location is C:\Program Files\World of Warcraft\ then change "(drive)\(subdir)\(subdir)\World of Warcraft\Cache\WDB\enUS\creaturecache.wdb" to "C:\Program Files\World of Warcraft\Cache\WDB\enUS\creaturecache.wdb" and change "(drive)\(subdir)\(subdir)\World of Warcraft\wow" to "C:\Program Files\World of Warcraft\wow" remember to put " at the start and the end.
    now save it and run, it launches wow for you and delete the cache every time when you launch wow by clicking this batch file, i hope this can help some people here.
  • #1482
    Thanks for your tip, but it doesn't work.
    The file is deleted when WOW is launched. With the first character I play, no problem. But if I change without quit the game, I have a superb message remember me to empty the cache. While the creature file is NOT in the folder (deletede and not recreated yet).

    It's very strange.
  • #1489
    Right, because WoW is still running, and thus still has the creature cache loaded. The *ONLY* way to clear the cache when switching characters is to fully exit the game, delete the file, and start up WoW again.
  • #1477

    Since the last update, I can't "delete" few rares.
    I do it for cache folder AND the addon folder AND variables of NPCscan for all of my characters, but when I log in, the add on remember me rares as Loque'Nahak or King Krush are in the cache.

    I don't understand why.
    I use this addon since many months. I delete the cache folder many times, and it worked. But not now.

    Is the another thing to do with the update ?
  • #1478
    It's most likely because u log in inside a city, so when u log in the addon finds those that's been tamed by a nearby hunter and caches them instantly.
  • #1490
    It's maybe this reason. The rares which reappear can be tamed.
    I don't have the warning message, it's why i didn't understand this.

    Thanks for the explanation.
  • #1476
    It doesnt work for the new rares either. So in my mind it is not actually "up to date"
  • #1475
    STOP doubting _NPC Scan! The addon works perfectly.
  • #1472
    Please is possible add option for print in chat guild when i found a NPC?
  • #1470
    Error report ! A few minutes ago I got my Time-lost Proto-Drake and _npcscan did NOT go off ! One of the rarest mobs ingame & the only mod designed to catch them did not go off tells me that there's something terribly wrong with it. Please have a look at this.
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